Panel Application; Otero-Castro v. Principi, 16 Vet.App. 375, 380 (2002) (“The basic principles that apply to construing statutes apply equally to construing regulations.”). If it is not clear, “the Court may look to other sources, including the history and purpose of the regulation.” Bailey v. Wilkie, 33 Vet.App. 188, 194 (2021); see Kisor, 139 S. Ct. at 2415 (explaining that to exhaust the traditional tools of regulatory construction, “a court must ‘carefully consider[]’ the text, structure, history, and purpose of a regulation” (quoting Chevron U.S.A. Inc. v. Nat. Res. Def. Council, Inc., 467 U.S. 837, 843 n.9 (1984))). “[D]eference [to the Agency] can arise only if a regulation is genuinely ambiguous[,] . . . after a court has resorted to all the standard tools of interpretation.” Kisor, 139 S. Ct. at 2414; by The Editor July 14, 2022 0 UNITED STATES COURT OF APPEALS FOR VETERANS CLAIMSNo. 19-0517JOAN NAILOS, APPELLANT,V.DENIS MCDONOUGH,SECRETARY OF VETERANS AFFAIRS, APPELLEE.On Appeal from the Board of Veterans’ Appeals(Argued June 17, 2021 Decided August 10, ...