U.S. Air Force Capt. Deryck Castonguay and Capt. Matt Hendrickson fly a KC-135 Stratotranker during Green Flag West 11-9 at the National Training Center on Fort Irwin, Calif., Aug. 16, 2011. Castonguay and Hendrickson are pilots assigned to the 171st Air Refueling Squadron. Green Flag West 11-9 provides a realistic, close-air support training environment for forces preparing to support worldwide combat operations. U.S. Air Force Capt. Deryck Castonguay and Capt. Matt Hendrickson fly a KC-135 Stratotranker during Green Flag West 11-9 at the National Training Center on Fort Irwin, Calif., Aug. 16, 2011. Castonguay and Hendrickson are pilots assigned to the 171st Air Refueling Squadron. Green Flag West 11-9 provides a realistic, close-air support training environment for forces preparing to support worldwide combat operations. SHARE: Download: Full Size (3.52 MB) Tags: Photo Essays Credit: VIRIN: 262931-V-AFQ40-876.jpg Photo Gallery