Joe Cox, 1st Maintenance Squadron Scare Wars project maintainer, connects the gas valve on a remote bird deterrent unit on Langley Air Force Base, Va., March 21, 2011. Scare Wars is an abatement system that uses liquefied petroleum gas cannons to scare away birds on the airfield to prevent damage to aircraft and personnel. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)