FINAL FLIGHT U.S. Air Force airmen prepare to take-off on a C-17 Globemaster III cargo aircraft on Ali Air Base, Iraq, Dec. 18, 2011, signaling the end of Operation New Dawn. The airmen were part of the last troops to leave Iraq. SHARE IMAGE: Download Image: Full Size (0.09 MB) Photo By: VIRIN: 495492-A-MCS29-528.jpg Photo Gallery