U.S., Estonian Airmen gather, clean flightline
U.S. Air Force Staff Sgt. Oscar Herrin, 74th Expeditionary Fighter Squadron aircraft structural maintenance craftsman, and Senior Airman Guillermo Tersy, 74th EFS metals technology journeyman, perform a foreign object debris walk on the flight line at Amari Air Base, Estonia, Sept. 25, 2015. During a FOD walk, Airmen walk along the flight line looking for debris that could cause damage to aircraft. (U.S. Air Force photo by Andrea Jenkins/Released)