Firefighters from the 97th Civil Engineer Squadron practice clearing a T-1 Jayhawk during egress training at Altus Air Force Base, Oklahoma, June 8, 2015. Altus is the training base for U.S. Air Force C-17 Globemaster III cargo aircraft, U.S. Air Force KC-135 Stratotanker refueling aircraft and soon to be U.S. Air Force KC-46A Pegasus refueling aircraft. (U.S. Air Force photo by Airman 1st Class Megan E. Acs)