FORT WORTH, Texas (March 23, 2021) Master-at-Arms First Class Juan Escamilla, left, a Navy Reserve Sailor assigned to Navy Operational Support Center (NOSC) Harlingen, participates in semi-annual small arms sustainment training on a Fire Arm Training Simulator (FATS) machine at Navy Region Southeast Reserve Component Command Fort Worth. The sustainment training is a Navy-wide requirement for all Sailors designated as armed watch standers. (U.S. Navy photo taken by Mass Communication Specialist 1st Class Lawrence Davis)