Master Sgt. Jeff Martin, United States Air Force Band, warms up prior to a concert Sept.11, in the Lisner Auditorium at George Washington University, D.C. The Band performed with the Grammy Award winning vocal ensemble, the New York Voices as part of the Band’s jazz heritage concert series. For a list of all the free, jazz heritage series concerts visit www.bollng.af.mil. (U.S. Air Force photo by Staff Sgt. Tim Chacon)