Tops in Blue kicks off 2011 tour

2011 Tops in Blue Male vocalists perform a routine during the group's dress rehearsal May 20 at Kelly Air Force Base, Texas. The 2011 Tops in Blue team is set to kick off their 'Rhythm Nation' tour with a performance at Barksdale Air Force Base, La., tonight. The show provides a glimpse of a century of popular music and how it grew through new rhythms and technology. (U.S. Air Force photo/Erin Tindell)