Members of Tops in Blue perform in the front courtyard of the Charleston VA Medical Center, Charleston, S.C., Oct. 21, 2015. Tops in Blue is an all active duty U.S. Air Force Expeditionary Entertainment Unit composed of 35 to 40 talented vocalists, musicians, dancers and technicians. It is one of the oldest and most widely traveled entertainment groups of its kind. (Courtesy Photo)

Members of Tops in Blue perform in the front courtyard of the Charleston VA Medical Center, Charleston, S.C., Oct. 21, 2015. Tops in Blue is an all active duty U.S. Air Force Expeditionary Entertainment Unit composed of 35 to 40 talented vocalists, musicians, dancers and technicians. It is one of the oldest and most widely traveled entertainment groups of its kind. (Courtesy Photo)