Jerome A. Holmes Circuit Judge

(D.C. No. 1:09-CV-00786-WJ-SMV)
(D.N.M.) ORDER AND JUDGMENT Before TYMKOVICH, GORSUCH, and HOLMES, Circuit Judges.

Heather Spurlock, Sophia Carrasco, and Nina Carrera (collectively, "Plaintiffs") sued Corrections Corporation of America ("CCA") and Warden Barbara Wagner (collectively, "Defendants"), as well as Officer Anthony Townes, after they were sexually assaulted by Officer Townes at a private detention center operated by CCA. They alleged violations of the Eighth Amendment, through the vehicle of 42 U.S.C. § 1983, and also of New Mexico tort law. The case was eventually tried before a jury. The jury found for Plaintiffs on some claims and Defendants on others, and awarded damages accordingly. These appeals and cross-appeals ensued, and raised five issues: (1) whether Defendants must pay the judgment against Officer Townes under N.M. Stat. Ann. § 33-1-17; (2) whether the special verdict form properly allowed for Plaintiffs' comparative fault to be assessed; (3) whether the jury instructions impermissibly limited Plaintiffs' Eighth Amendment claim to a single theory of liability; (4) whether the district court erred in awarding costs to Plaintiff Carrera under Federal Rule of Civil Procedure 54(d); and (5) whether Defendants are liable to pay the attorneys' fees Plaintiffs were awarded against Officer Townes and whether the district court's calculation of those fees was in error.

In order to resolve the second issue, involving comparative fault, we certified to the New Mexico Supreme Court ("NMSC") the question of whether New Mexico recognizes the affirmative defense of comparative fault on negligent-supervision claims. In response, the NMSC issued a decision recognizing a new theory of vicarious liability (for which it rejected the use of comparative-fault principles). It applied that theory to Plaintiffs' vicarious-liability claim—which had been dismissed on summary judgment—and concluded that Defendants CCA and Ms. Wagner should be held liable for all compensatory damages resulting from Officer Townes's tortious conduct. Because the NMSC held that full compensatory damages should be awarded to all Plaintiffs under the vicarious-liability claim, and because New Mexico law ordinarily prohibits double recovery of compensatory damages, the NMSC declined to resolve the issue of comparative fault with respect to Plaintiffs' negligent-supervision claim.

We exercise jurisdiction pursuant to 28 U.S.C. § 1291. And, with the NMSC's rulings in mind, we affirm in part, vacate in part, reverse in part, and remand for further proceedings.

I

In 2007, Officer Townes sexually assaulted all three Plaintiffs while they were inmates at the Camino Nuevo Correction Center ("Camino")—a New Mexico all-female prison privately operated under contract by CCA—where Officer Townes was employed as a prison guard. Plaintiffs sued under 42 U.S.C. § 1983, alleging violations of, inter alia, the Eighth Amendment and also sought relief under New Mexico state law.

Before trial, the district court issued several rulings pertinent to this appeal. The court granted summary judgment for Plaintiffs on the issue of liability as to the Eighth Amendment § 1983 claim against Officer Townes. However, it refused to hold Defendant CCA strictly liable under a respondeat superior theory for the constitutional harms caused by Officer Townes; it reasoned in part that N.M. Stat. Ann. § 33-1-17 does not make private prison- management companies like CCA strictly liable for the tortious conduct of their employees. Further, the court granted summary judgment for Defendants as to all but two of the claims against them (specifically, as to all but the Eighth Amendment and negligent-supervision claims). Notably, in this regard, the court granted Defendants summary judgment on Plaintiffs' state-law vicarious-liability claim. It explained that Defendants could not be held vicariously liable for Officer Townes's intentional torts under a respondeat superior theory because he was not acting within the course and scope of his employment when he sexually assaulted Plaintiffs.

The case proceeded to trial: the jury was called on to decide liability regarding only the two claims against Defendants that survived summary judgment—i.e., the Eighth Amendment and negligent-supervision claims—and also the damages to be awarded for the claims for which the court had already determined that Officer Townes was liable. The jury found for Defendants on the Eighth Amendment claim, and for Plaintiffs Spurlock and Carrasco—but not for Plaintiff Carrera—on the negligent-supervision claim.

As to the Eighth Amendment § 1983 claim against Officer Townes, each Plaintiff was awarded some compensatory damages and $1,000,000 in punitive damages. In addition, Plaintiffs Spurlock and Carrasco were awarded $51,000 and $130,000, respectively, in compensatory and punitive damages against Defendants for the negligent-supervision claim.

In calculating the damages awards for the negligent-supervision claim, the jury was instructed by the court as to each Plaintiff on a special verdict form, which used essentially identical language, to "[s]tate in a percentage how comparatively negligent Defendants CCA and Barbara Wagner were, and how comparatively negligent [each Plaintiff] was." Aplts.' App. at 1268, 1274 (Special Verdict Form, filed Feb. 16, 2012). The jury found Ms. Spurlock fifty-four percent comparatively negligent and Ms. Carrasco twenty percent comparatively negligent, and reduced their compensatory-damages awards accordingly.

These cross-appeals ensued. Because they presented, inter alia, an important open question regarding Defendants' ability to raise a comparative-fault defense against Plaintiffs under New Mexico law, we requested that the NMSC exercise its discretion to accept the following certified question of state law:

When an inmate is sexually assaulted by a corrections officer, does New Mexico recognize the affirmative defense of comparative fault—permitting the comparison of the correctional facility/employer's alleged negligence with the alleged fault of the inmate victim—for the purpose of reducing the amount of a judgment entered on the inmate's state-law claim of negligent supervision of the tortfeasor-officer by the employer?

On March 14, 2016, the NMSC issued an opinion responding to our Certification Order. See Spurlock v. Townes, 368 P.3d 1213 (N.M. 2016). In its opinion, the NMSC "exercise[d] [its] discretion to reformulate the [certified] question." Id. at 1216 (citation omitted). It "h[e]ld that under New Mexico law CCA and Wagner are vicariously liable for all compensatory damages caused by the corrections-officer employee when he was aided in accomplishing his assaults by his agency relationship with CCA and Wagner who were his employers[,]" and "[n]o affirmative defense of comparative fault is available in this context." Id.

The NMSC explained that under an "aided-in-agency theory" of vicarious liability, an employer may be held liable for the intentional torts of an employee—even if the employee was acting outside the scope of his or her employment—if the employee "was aided in accomplishing the tort by the existence of the agency relation." Id. at 1216-17 (quoting Ocana v. Am. Furniture Co., 91 P.3d 58, 71 (N.M. 2004)). The NMSC established that, "[i]n order to prevail under an aided-in-agency theory, Plaintiffs had to prove that Townes was aided in accomplishing his assaults by his status as a corrections officer that afforded him substantial power and control over Plaintiffs." Id. at 1217-18. And the court concluded that Plaintiffs did prevail on this theory because Officer Townes "used the authority vested in him by his position as a corrections officer to coerce Plaintiffs, who were inmates entrusted to his care, into submitting to sexual assault and false imprisonment." Id. at 1218.

As a result of this holding, the NMSC concluded: "Because CCA and Wagner are fully liable for [the compensatory damages] award under vicarious liability principles regardless of any direct negligence on their part, we do not reach the claim of negligent supervision nor any theories of comparative fault that might have been applicable to that theory." Id. at 1219. The NMSC explained that it was "declin[ing] to determine the availability of an affirmative defense alleging Plaintiffs' comparative fault in a claim of liability for negligent supervision of an intentional tortfeasor because the vicarious liability of CCA and Wagner ma[de] th[at] determination unnecessary." Id. at 1216. In this regard, the NMSC referred to New Mexico's prohibition on double recovery and noted its desire to avoid addressing unnecessary certified issues which could result in it handing down an advisory opinion. See id.

II

With the NMSC's answer to our certified question in hand, we now address all five claims that Plaintiffs previously raised on appeal—as well as a sixth claim that Plaintiffs raise for the first time on appeal in their post-certification briefing. Specifically, we address: (1) whether Defendants must pay the judgment against Officer Townes under N.M. Stat. Ann. § 33-1-17; (2) whether the district court's special verdict form properly allowed for Plaintiffs' comparative fault to be assessed regarding the negligent-supervision claim; (3) whether the court's jury instructions impermissibly limited Plaintiffs' Eighth Amendment claim to a single theory of liability; (4) whether the court erred in awarding costs under Federal Rule of Civil Procedure 54(d); and (5) whether Defendants are liable to pay the attorneys' fees Plaintiffs were awarded against Officer Townes and whether the district court correctly calculated those fees. In addition, we address Plaintiffs' claim that the NMSC's certified answer opened the door for them to receive punitive damages for their vicarious-liability claim, a claim the district court previously dismissed on summary judgment. We address each of these six issues in order.

A

Regarding the first issue, we conclude that N.M. Stat. Ann. § 33-1-17 does not require Defendant CCA to pay the full judgment against Officer Townes. We review de novo the district court's interpretation of a state law. See Cent. Kan. Credit Union v. Mut. Guar. Corp., 102 F.3d 1097, 1104 (10th Cir. 1996).

N.M. Stat. Ann. § 33-1-17 provides, in relevant part, that New Mexico's "corrections department may contract for the operation of any adult female facility or for housing adult female inmates in a private facility with a person or entity in the business of providing correctional or jail services to government entities[,]" N.M. Stat. Ann. § 33-1-17(A), and that any such contract "shall include provisions:"

. . . .

(2) that the contractor assumes all liability caused by or arising out of all aspects of the provision or operation of the facility; [and]

(3) for liability insurance or other proof of financial responsibility acceptable to the general services department covering the contractor and its officers, employees and agents in an amount sufficient to cover all liability caused by or arising out of all aspects of the provision or operation of the facility[.]

The district court rejected Plaintiffs' interpretation of section 33-1-17. The court observed that it is "patently false" that § 33-1-17's indemnification language—which requires the contractor to assume "all liability" arising from the contract—states that CCA is "strictly liable for any torts committed by its employees." Aplts.' App. at 185-86. (Dist. Ct. Order, filed May 26, 2010). Instead, the court explained, "any plaintiff suing CCA under the contract must first show that CCA is actually liable for misconduct under some viable legal theory." Id. at 186. Thus, in the district court's view, "CCA is merely agreeing [in the contract] to hold New Mexico harmless for any liability which may arise and to indemnify New Mexico for any expenses it incurs in defending against such liability. CCA is not agreeing to be held strictly liable under a respondeat superior theory for the constitutional violations of its employees." Id. at 187.

We deem the district court's reasoning to be sound and cogent. We uphold its order for substantially these same reasons. In other words, we agree that N.M. Stat. Ann. § 33-1-17 does not require Defendant CCA to assume liability for injuries caused by Officer Townes. As a result, we affirm as to this issue.

B

1

Turning to the second issue, involving the viability of an alleged comparative-fault defense to Plaintiffs' negligent-supervision claim and our certified question, we begin with the NMSC's holding regarding vicarious liability under an aided-in-agency theory, because it impacts our disposition of the comparative-fault negligent-supervision issue. In brief, we adopt the NMSC's vicarious-liability holding but only deem it applicable to Defendant CCA because only CCA and not Ms. Wagner is named in the operative complaint. Consequently, we conclude that the district court erred in its summary-judgment ruling regarding vicarious liability. We therefore remand for the district court to enter judgment in favor of all Plaintiffs and against Defendant CCA on the vicarious-liability claim, with instructions to award full compensatory damages to all Plaintiffs on that claim. But, for the reasons noted below, we conclude that Plaintiffs cannot recover compensatory damages from either Defendant CCA or Ms. Wagner based on their negligent-supervision claim and do not reach the comparative-fault issue that we actually certified to the NMSC.

More specifically, we adopt the NMSC's holding of vicarious liability under an aided-in-agency theory. However, we apply that holding only to Defendant CCA; only CCA is a named defendant in the vicarious-liability claim of the operative complaint—not Ms. Wagner. Accordingly, we hold that Defendant CCA is fully liable for Officer Townes's intentional torts under an aided-in-agency theory.

It goes without saying that the NMSC is the final word regarding New Mexico tort law. Defendants argue nevertheless that it would be unfair for us to adopt the NMSC's holding because the NMSC did not answer the certified question, and because the NMSC "effectively amended the Plaintiffs' complaint to add [a] new theory of liability." Aplees.' Suppl. Mem. Br. at 1. We disagree.

The vicarious-liability claim as to Defendant CCA was present in the operative complaint and—even though it did not specifically mention an aided-in-agency theory—it provides the ultimate predicate for CCA's liability. In its certified answer, the NMSC simply clarified the scope and substance of Plaintiffs' vicarious-liability claim; in particular, it clarified the permissible conditions under which relief could be obtained on that pleaded claim—notably, under an aided-in-agency theory. Moreover, as we see it, the NMSC's holding regarding vicarious liability is inextricably intertwined with the negligent-supervision comparative-fault issue as to which we did seek certification; notably, the NMSC declined to reach the latter issue in light of its holding regarding the vicarious-liability claim. So, in factoring into our decisional calculus the NMSC's answer to our certified question (which queried the NMSC about the comparative-fault negligent-supervision issue) we think it is proper to consider and ultimately adopt that court's associated vicarious-liability holding and apply it to Defendant CCA.

Furthermore, Defendants had an adequate opportunity to challenge on the merits the aided-in-agency theory of vicarious liability when Plaintiffs asserted it before the NMSC during the certification proceedings, but they did not do so; instead, they elected merely to argue that the theory was not properly before the NMSC. That Defendants chose not to respond on the merits to Plaintiffs' arguments regarding the aided-in-agency theory—for strategic reasons or otherwise—does not mean that they were unfairly deprived of an opportunity to do so. Therefore, in our view, Defendants do not have a cogent argument that they would be denied due process or otherwise treated unfairly if we adopt the NMSC's holding on vicarious liability. See, e.g., West v. Grand Cty., 967 F.2d 362, 367 (10th Cir. 1992) ("The individual entitled to due process protection needs only to be given notice and an opportunity to respond."); accord Cleveland Bd. of Educ. v. Loudermill, 470 U.S. 532, 546 (1985) ("The essential requirements of due process, and all that respondents seek or the Court of Appeals required, are notice and an opportunity to respond.").

Thus, having properly adopted the NMSC's holding and applied it to Defendant CCA, we reverse the district court's grant of summary judgment for Defendants on the vicarious-liability claim, and remand with instructions for the district court to enter judgment in favor of all Plaintiffs on that claim against Defendant CCA, and to award them full compensatory damages.

2

Because we adopt the NMSC's decision regarding vicarious liability, we decline to reach the merits of Plaintiffs' negligent-supervision comparative-fault challenge—which was the issue that we certified to the NMSC. Specifically, as to Defendant CCA, we deem the issue moot. Because Plaintiffs will recover all compensatory damages against Defendant CCA under the vicarious-liability claim, and because they cannot recover for the same harm twice under New Mexico law, see, e.g., Sunnyland Farms, Inc. v. Cent. N.M. Elec. Coop., Inc., 301 P.3d 387, 400 (N.M. 2013); Hood v. Fulkerson, 699 P.2d 608, 611 (N.M. 1985), we agree with the NMSC that the negligent-supervision comparative-fault challenge is moot as to Defendant CCA. In other words, because Plaintiffs cannot recover anything, as a matter of law, on their negligent-supervision claim from Defendant CCA, we cannot afford any relief on that claim, and Plaintiffs' comparative-fault challenge with respect to that claim is therefore legally irrelevant—viz., it matters not whether a negligent-supervision recovery from Defendant CCA could be permissibly reduced for comparative fault because there will not be such a recovery for negligent supervision from CCA.

However, importantly, we do not apply the NMSC's aided-in-agency vicarious-liability holding to Defendant Wagner because she was not a named defendant in the vicarious-liability claim of the operative complaint. We acknowledge that because Ms. Wagner was not a named defendant under the vicarious-liability claim, the double-recovery rationale—stemming from Plaintiffs' full relief on that claim—would not seemingly apply to her. If that were true, then Plaintiffs conceivably would not be precluded, as a matter of law, from recovering relief against Ms. Wagner on their negligent-supervision claim and the viability of a comparative-fault defense relative to such a claim would still be a question for us to resolve. However, Plaintiffs' supplemental briefing does not evince any intention of continuing to prosecute their negligent-supervision claim against Ms. Wagner, so long as they are permitted to receive full relief on their vicarious-liability claim against Defendant CCA.

Specifically, Plaintiffs have indicated that their negligent-supervision claim—and thus the issue of comparative fault—"drops out of the analysis[,]" if they prevail on their vicarious-liability claim against Defendant CCA. Aplts.' Suppl. Mem. Br. at 2; accord id. at 4, 8. And, perhaps more to the point, with their gaze seemingly focused on the recovery of damages on their vicarious-liability claim from Defendant CCA, Plaintiffs have not specifically sought in explicit terms relief against Ms. Wagner on their negligent-supervision claim. Accordingly, at least under the circumstances present here, where the condition of Plaintiffs' recovery of full relief from Defendant CCA on the vicarious-liability claim is satisfied, we conclude that Plaintiffs have effectively waived and abandoned—through the averments of their supplemental briefing or the lack thereof—any negligent-supervision claim against Ms. Wagner. See, e.g., Bronson v. Swensen, 500 F.3d 1099, 1104 (10th Cir. 2007); Tran v. Trs. of State Colls. of Colo., 355 F.3d 1263, 1266 (10th Cir. 2004). Consequently, we have no need to decide as to Ms. Wagner whether the district court erred in permitting the comparative-fault defense to be presented to the jury on the negligent-supervision claim.

To summarize: we reverse the district court's grant of summary judgment for Defendants on the vicarious-liability claim, and remand with instructions to enter judgment for all Plaintiffs on the vicarious-liability claim as to Defendant CCA. Due to New Mexico's prohibition on double recovery, and Plaintiffs' effective waiver of their negligent-supervision claim as to Defendant Wagner, we need not, and thus do not, resolve any issues regarding the negligent-supervision claim—notably, the issue of whether a comparative-fault defense to such a claim is viable under the circumstances here.

C

Turning to the third issue in the case, we reject Plaintiffs' claim that the jury instructions impermissibly limited their Eighth Amendment claim to a single theory of liability. "We review 'a district court's refusal to give a requested [jury] instruction for abuse of discretion[,]' [b]ut we review the jury instructions de novo to determine 'whether, as a whole, they accurately state the governing law.'" Cavanaugh v. Woods Cross City, 718 F.3d 1244, 1251 (10th Cir. 2013) (citation omitted) (quoting United States v. Crockett, 435 F.3d 1305, 1314 (10th Cir. 2006)).

At the outset, we hold that Plaintiffs' jury-instructions challenge is fatally infirm because they failed to identify in their opening brief an additional CCA policy or custom that was supported by sufficient evidence to warrant a jury instruction, beyond the policy or custom that was the subject of the district court's instruction—viz., a policy or custom of discouraging the reporting of staff misconduct. Specifically, in order to establish CCA's liability under 42 U.S.C. § 1983, Plaintiffs were obliged to point to a policy or custom of CCA "that caused their injury." Bd. of Cty. Comm'rs v. Brown, 520 U.S. 397, 409 (1997); see Monell v. Dep't of Soc. Servs., 436 U.S. 658, 694 (1978) ("[A] local government may not be sued under § 1983 for an injury inflicted solely by its employees or agents. Instead, it is when execution of a government's policy or custom . . . inflicts the injury that the government as an entity is responsible under § 1983."); Barney v. Pulsipher, 143 F.3d 1299, 1307 (10th Cir. 1998) ("The County may be held liable under 42 U.S.C. § 1983 only for its own unconstitutional or illegal policies and not for the tortious acts of its employees.").

In their opening brief, Plaintiffs insist that the district court erred "[b]y focusing on the search for a single, express policy or policymaking decision by Defendant Wagner"; as a consequence, they reason, it "ignored the combined effect of the circumstantial evidence showing deliberate ignorance from other angles." Aplts.' Opening Br. at 55. In this regard, Plaintiffs stress that "[a] conscious or deliberate choice to disregard the risk of harm can reasonably be inferred from the fact" that Officer Townes engaged in a pattern of tortious conduct that "was viewable on security cameras" or otherwise noticeable. Id. at 54.

Plaintiffs' argument is fundamentally misguided, however, because it conflates their burden to establish that CCA's agents acted pursuant to a policy or custom—such that their conduct may be properly attributed to CCA—with their additional obligation to show that CCA's conduct involved the requisite culpability, that is, deliberate indifference. See Brown, 520 U.S. at 404 ("[I]t is not enough for a § 1983 plaintiff merely to identify conduct properly attributable to the municipality. The plaintiff must also demonstrate that, through its deliberate conduct, the municipality was the 'moving force' behind the injury alleged. That is, a plaintiff must show that the municipal action was taken with the requisite degree of culpability . . . ."); Simmons v. Uintah Health Care Special Dist., 506 F.3d 1281, 1284 (10th Cir. 2007) ("When employees take actions specifically authorized by policy or custom, their actions can be fairly said to be the municipality's."); see also City of Canton v. Harris, 489 U.S. 378, 392 (1989) ("[W]hile claims such as respondent's—alleging that the city's failure to provide training to municipal employees resulted in the constitutional deprivation she suffered—are cognizable under § 1983, they can only yield liability against a municipality where that city's failure to train reflects deliberate indifference to the constitutional rights of its inhabitants." (emphasis added)); Barney, 143 F.3d at 1307 ("The deliberate indifference standard may be satisfied when the municipality has actual or constructive notice that its action or failure to act is substantially certain to result in a constitutional violation, and it consciously or deliberately chooses to disregard the risk of harm. In most instances, notice can be established by proving the existence of a pattern of tortious conduct." (citation omitted)); cf. Schneider v. City of Grand Junction Police Dep't, 717 F.3d 760, 770 (10th Cir. 2013) ("A challenged practice may be deemed an official policy or custom for § 1983 municipal-liability purposes if it is a formally promulgated policy, a well-settled custom or practice, a final decision by a municipal policymaker, or deliberately indifferent training or supervision." (emphasis added)).

In other words, deliberate indifference is not legally actionable under § 1983 in a vacuum; it must pertain to a substantial risk of unconstitutional effects resulting from municipal conduct—viz., conduct undertaken pursuant to a municipality's policy or custom. Therefore, it is not enough for Plaintiffs to point to circumstantial proof that establishes that Defendant CCA possessed a generally callous or reckless mindset regarding the conduct of its agents—that is, a mindset rising to the level of deliberate indifference. They must identify an actionable CCA policy or custom.

In their reply brief, Plaintiffs endeavor to remedy this fatal deficiency by alluding to a second ostensible policy or custom—"a failure to supervise[,]" Aplts.' Reply Br. at 51—but this identification of an additional policy comes too late. See, e.g., Richison v. Ernest Grp., Inc., 634 F.3d 1123, 1127 (10th Cir. 2011); Wheeler v. Comm'r of Internal Revenue, 521 F.3d 1289, 1291 (10th Cir. 2008). In any event, even if we were inclined to assess the viability of Plaintiffs' instructional challenge in light of this late-blooming policy or custom, they would not prevail. Despite Plaintiffs' vigorous efforts to demonstrate otherwise, they have failed to present sufficient evidence that would have warranted a failure-to-supervise instruction. More specifically, they have failed to present adequate evidence that Defendant CCA was on "actual or constructive notice" that its failure to supervise was "substantially certain to result in a constitutional violation, and it consciously or deliberately [chose] to disregard the risk of harm." Barney, 143 F.3d at 1307; see Brown, 520 U.S. at 397 ("As our decision in Canton makes clear, 'deliberate indifference' is a stringent standard of fault, requiring proof that a municipal actor disregarded a known or obvious consequence of his action."); see also City of Canton, 489 U.S. at 396 (Brennan, J., concurring) ("Where a § 1983 plaintiff can establish that the facts available to city policymakers put them on actual or constructive notice that the particular omission is substantially certain to result in the violation of the constitutional rights of their citizens, the dictates of Monell are satisfied.").

For example, Plaintiffs have failed to adequately demonstrate that Defendants were put on actual or constructive notice by a pattern of officer sexual assaults at Camino before Officer Townes assaulted them. See Brown, 520 U.S. at 411 ("A plaintiff must demonstrate that a municipal decision reflects deliberate indifference to the risk that a violation of a particular constitutional or statutory right will follow the decision." (emphasis added)); Barney, 143 F.3d at 1308 ("[P]laintiffs' failure-to-train claim fails because the record contains no evidence tending to show that the County acted with deliberate indifference. The Sheriff and the Commissioners testified in their depositions they were unaware of any previous incidents involving the sexual assault of an inmate by a Box Elder County jailer or of any complaints about the treatment of women inmates at the jail."); see also City of Canton, 489 U.S. at 385 ("[O]ur first inquiry in any case alleging municipal liability under § 1983 is the question whether there is a direct causal link between a municipal policy or custom and the alleged constitutional deprivation. (emphases added)).

In other words, in our view, Plaintiffs' evidence did not present a triable issue regarding whether Defendants were deliberately indifferent to a substantial risk that their purported failure-to-supervise policy would cause an Eighth Amendment violation. Consequently, Plaintiffs have failed to show that the evidence adduced at trial could have supported Eighth Amendment liability for a policy other than discouraging inmate complaints. Accordingly, the district court did not err in charging the jury only regarding the policy of discouraging inmate complaints.

D

Next, we conclude that the district court should revisit the fourth issue remaining in the case, regarding Federal Rule of Civil Procedure 54(d) costs. Both parties acknowledge that if we adopt the NMSC's ruling regarding vicarious liability (as we have), the cost equation will be dramatically altered, not the least of which because Plaintiff Carrera will now be a prevailing party as to the vicarious-liability claim, and because there will be no reduction for comparative fault. So, we vacate and remand for the district court to address this issue in the first instance.

E

On the fifth issue, for much the same reason that we vacate and remand as to costs, we do so as to attorneys' fees. Adopting the NMSC's ruling scrambles the decisional chess board, and we deem it prudent to allow the district court to address in the first instance whether to allow attorneys' fees. Moreover, we decline Plaintiffs' request for appellate attorneys' fees, which they advance in skeletal fashion—without citation to pertinent authorities or argument—only in their opening brief and in their supplemental brief. Cf. Zinna v. Congrove, 755 F.3d 1177, 1183 (10th Cir. 2014) ("Because there is no argument, authority, or record citations . . . the appellate fee issue is not sufficiently raised on appeal.").

F

Finally, in their post-certification briefing, Plaintiffs seek punitive damages based on their newly-obtained victory on the vicarious-liability claim. Because we adopt the NMSC's view as to vicarious liability, we remand for the district court to address Plaintiffs' punitive-damages claim in the first instance. More specifically, we leave to the district court to decide in the first instance whether Plaintiffs should be allowed to pursue such punitive damages and, if so, what procedures should govern the resolution of this damages issue. We do this recognizing that the vicarious-liability claim for which Plaintiffs seek punitive damages never went to the jury, and that, prior to their post-certification supplemental briefing, Plaintiffs did not argue on appeal for punitive damages relative to this claim.

III

In sum, for the foregoing reasons, we affirm in part, vacate in part, reverse in part, and remand for further proceedings consistent with this order and judgment.

ENTERED FOR THE COURT

Jerome A. Holmes

Circuit Judge