MACDILL AIR FORCE BASE, Fla. -- Colonel Dave Pavey, commander of the 927th Air Refueling Wing, welcomed the Liberty Bells, the United Services Organization’s only chartered show troupe recently. From left to right, Heidi Marie Ferren, Alix Paige and Joanna Howard and performed classic and contemporary hits for the gathered audience. (Official U.S. Air Force photo by Staff Sgt. Shawn Rhodes)