31st TES F-35s take on Green Flag 15-08
An F-35A Lightning II assigned to the 31st Test and Evaluation Squadron, Edwards Air Force Base, Calif., waits off the wing of a KC-135 Stratotanker assigned to the 927th Air Refueling Wing, MacDill AFB, Fla., after refueling during a Green Flag 15-08 training sortie in the skies over the National Training Center, Calif., June 10, 2015. The F-35 is the Department of Defense's focal point for defining affordable next generation strike aircraft weapon systems for the Navy, Air Force, Marines, and world allies. (U.S. Air Force photo by Senior Airman Joshua Kleinholz)