U.S. Air Force maintainers from the 97th Maintenance Directorate tow a U.S. Army AH-64 Apache helicopter across the flightline during joint training Nov. 13, 2013. The U.S. Army and Air Force practiced loading Apache helicopters onto a U.S. Air Force C-17 Globemaster III cargo aircraft to improve joint contingency operations. (U.S. Air Force photo by Senior Airman Dillon Davis/Released)