U.S. Air Force Staff Sgt. Adam Washburn, 633rd Civil Engineer Squadron firefighter, checks the blood pressure of Chief Master Sgt. Richard Parsons, command chief of Air Combat Command, prior to performing the firefighters’ challenge at Langley Air Force Base, Va., July 17, 2013. The firefighters challenge is a fitness requirement for all firefighters and is physically demanding. (U.S. Air Force photo by Airman 1st Class Victoria H. Taylor/Released)