An audience member records a performance of Master Sgt. Eric Sullivan during a U.S. Air Force Band concert Dec. 15, 2013, at the Smithsonian National Air and Space Museum, Udvar-Hazy Center, Chantilly, Va. Sullivan sang the song “I’ll Be Brave This Christmas” as a tribute to all deployed service members past and present. Sullivan is an Air Force Band member. (U.S. Air Force photo/Staff Sgt. Carlin Leslie)