Dyess Airmen conduct a Foreign Object Debris (FOD) walk down the flightline Sept. 9, 2013, at Dyess Air Force Base, Texas. On Aug. 29, Dyess reached a new pinnacle of FOD prevention; 1,500 days without a chargeable FOD incident. FOD is considered a substance, debris or article alien to a vehicle or system which can cause significant damage to an aircraft. (U.S. Air Force photo by Staff Sgt. Richard Ebensberger/Released)