Lt. Col. Mike Parker and Capt. Mike Mothena, 315th Airlift Wing, prepare their C-17 Globemaster III to receive fuel from a KC-135R Stratotanker from the 459th Air Refueling Wing, Joint Base Andrews, Md. May 21. The in-flight refueling was accomplished on the way to the Palmetto Challenge Exercise near Pope Field, North Carolina. (U.S. Air Force photo by Master Sgt. Scott Mathews)