Airman 1st Class Derrick Whitfield, 49th Civil Engineer Squadron structures flight apprentice, stands guard at a defensive fighting position during a Field Training Exercise at Holloman Air Force Base, N.M., Dec. 5. DFPs are strategically placed around a forward operating base to ensure complete coverage of the perimeter from opposing ground forces. The 3-day exercise reinforced combat readiness and evaluated mission effectiveness in deployed situations. (U.S. Air Force photo by Airman 1st Class Michael Shoemaker/Released)
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