U.S. Air Force Chief Master Sgt. Richard Parsons, command chief of Air Combat Command, uses a 10-pound hammer to move a 160-pound sled during the firefighters’ challenge at the 633rd Civil Engineer Squadron fire station on Langley Air Force Base, Va., July 17, 2013. The record for fastest time, start to finish, held at the fire station is 4 minutes, 20 seconds. (U.S. Air Force photo by Airman 1st Class Victoria H. Taylor/Released)