32 CFR § 842.31 - Definitions.
(b) Final denial. A letter mailed from the settlement authority to the claimant or authorized agent advising the claimant that the Air Force denies the claim. Final denial letters mailed from within the United States shall be sent by U.S. Mail, certified mail, return receipt requested.
(c) Noncombat activity. Activity, other than combat, war or armed conflict, that is particularly military in character and has little parallel in the civilian community.