IRAQ ARRIVAL U.S. Army Lt. Gen. Robert Caslen, right, commander of the U.S. Office of Security Cooperation in Iraq, and U.S. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, talk while flying over Baghdad, Aug. 21, 2012. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 428115-C-UKF39-754.jpg Photo Gallery