Master Sgt. Sergio, Expeditionary Prime Base Engineer Emergency Force Squadron water and fuels systems manager, smooth’s out concrete at a construction site at an undisclosed location in Southwest Asia Mar. 4, 2015. EPBS does stand-alone small to medium construction projects, from programming to real estate capitalization as well as working with larger units such as Red Horse, Seabees and Army engineer battalions to build large scale projects. Serfio is currently deployed from the 161st Civil Engineer Squadron out of Sky Harbor Air National Guard Base, Phoenix, Ariz. (U.S. Air Force photo/Tech. Sgt. Marie Brown) (RELEASED)