GREETING TROOPS U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, greets troops assigned to the Combined Press Information Center in Baghdad, July 27, 2010. Mullen's final stop in Iraq wraps up a 10-day trip around the world. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 696382-Q-LUN25-802.jpg Photo Gallery