Marvin Walker, a patrolman with the 628th Security Forces Squadron, secures the flightline at Joint Base Charleston, , Feb. 9, 2015. Walker's works through the night to secure entry control points, ensure accountability for all aircraft, and check that there aren't any improperly lit areas on the ramp. Tech. Sgt. Renae Pittman
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Keywords: .., air, avionics, charleston, defense, force, jb, maintenance, midshift, military, night, ops, shift, swing, united, war