FOD check
Master Sgt. Lance Stephenson, 28th Bomb Wing Foreign Object Debris program manager, checks the tires of the FOD Mule for FOD at Ellsworth Air Force Base, S.D., Jan. 31, 2014. Prior to driving onto the flight line, all vehicles must be inspected for FOD to ensure safety and prevent damage to aircraft. (U.S. Air Force photo by Senior Airman Anania Tekurio/Released)