U.S. Air Force Staff Sgt. Chad Green and Airman 1st Class Britt Beshear, 633rd Civil Engineer Squadron Fire Department firefighters, don fire protective gear during a simulated aircraft fire at Langley Air Force Base, Va., April 23, 2014. Airmen from the 633rd CES shared best practices with a Royal Netherlands Air Force counterpart to foster relationships and increase capabilities. (U.S. Air Force photo by Staff Sgt. Antoinette Gibson/Released)