FORTRESS COCKPIT Air Force Capt. Matthew Gray, right, and Air Force 1st Lt. Reed Elsbernd fly a B-52H Stratofortress aircraft during a Green Flag East training mission over Fort Polk, La., Aug. 21, 2013. Gray and Elsbernd, B-52 stratofortress pilots, are assigned to the 20th Bomb Squadron. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 915838-B-OKW34-876.jpg Photo Gallery