Col. Brian Lindsey, 618th Air Operations Center director of operations, calls for an evacuation during an exercise Feb. 20, 2015, at Scott Air Force Base, Ill. The exercise scenario included a bomb threat and had multiple agencies responding to the situation. (U.S. Air Force photo by Staff Sgt. Clayton Lenhardt/Released)
Staff Sgt. Clayton Lenhardt
Taken on 19 February 2015
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