LAST CALL U.S. Army Command Sgt. Maj. William J. Gainey, senior enlisted advisor to the chairman of the Joint Chiefs of Staff, talks to troops during his last all-hands call at the Pentagon, April 18, 2008. Gainey's retirement ceremony is scheduled for April 25, 2008. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 128756-W-FUW62-095.jpg Photo Gallery