U.S. Air Force Airman 1st Class Robert Black, 97th Civil Engineer Squadron structural journeyman, carries a sandbag to fortify a defensive fight position during a Prime Base Engineer Emergency Force exercise, Feb. 19, 2015. During the exercise, the squadron, separated into four flights, completed training on methods for searching large areas, building defensive fighting positions, extracting unconscious victims and handling unidentified vehicles approaching the installation. (U.S. Air Force photo by Airman 1st Class J. Zuriel Lee/Released)
<br>Unit: 97th Air Mobility Wing, Public Affairs
Airman 1st Class Jimmie Lee
Taken on 19 February 2015
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