Sheryl Underwood Comedian Sheryl Underwood, dressed as the King of Rock and Roll, performs for service members of Bagram Airfield, Afghanistan, Dec. 23, 2009, during the USO's Sergeant Major of the Army Hope and Freedom Tour. SHARE: Download: Full Size (0.58 MB) Credit: Army Sgt. William Henry VIRIN: 091223-O-D0439-001M.JPG Photo Gallery