Tops in Blue rocks Las Vegas Published June 21, 2012 By Airman 1st Class Matthew Landcaster 99th Air Base Wing Public Affairs LAS VEGAS, Nev. -- The Tops in Blue performed at the Freemont Street Experience, Las Vegas, June 8, 2012. Tops In Blue is one of the oldest and most widely traveled entertainment groups of its kind. Composed of 35 to 40 of the Air Force's most talented vocalists, musicians, dancers, and techncians, their primary purpose is to perform for military personnel and their families throughout the world. However, the enormous popularity of the group has also made them America's goodwill ambassadors around the globe.