TWO LEADERS U.S. Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, exchanges greetings with Army Gen. Stanley McCrystal, commander, International Security Assistance Force and U.S. Forces in Afghanistan, in Kabul, March 29, 2010. Mullen is accompanying a USO tour in the region with James Gandolfini and Tony Sirico from HBO's "The Sopranos," New Orleans Saint Jon Stinchcomb and actress Rose McGowen. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 130727-W-GTS79-910.jpg Photo Gallery