PENSACOLA, Fla. (Feb. 9, 2023) A Naval Air Station (NAS) Pensacola Navy security forces (NSF) Sailor participates in an active shooter scenario during exercise Citadel Shield-Solid Curtain. The exercise, an annual Navy-wide series of training scenarios designed for NSF personnel to perfect their tactics and procedures in coordination with local first responders, is a two-part force protection (FP) exercise conducted at all continental U.S. Navy installations. (U.S. Navy photo by Bruce Cummins)