Tech. Sgt. Brandon Mercer, 157th Civil Engineer Squadron operations noncommissioned officer in charge, leads Air National Guardsmen from five civil engineer squadrons in combat vehicle operation training during the 2024 Region One Prime Base Engineer Emergency Force field training exercise at Fort Devens, Mass., May 15, 2024. One of five modules, the combat vehicle operations module material consisted of up-armored high mobility multipurpose wheeled vehicle licensing, basic communication, tactical communications, convoy operations, mounted patrolling and night driving. (Air National Guard photo by Airman 1st Class Julia Ahaesy)