Master Sgt. Shani Prewitt performs for an auditorium of students at Stuart-Hobson Middle School, Washington, D.C., Sept. 11, 2013. Max Impact, the premier rock band of the United States Air Force, performed at the school as a part of the Advancing Innovation through Music program. Prewitt is the NCO in charge and vocalist with Max Impact, the United States Air Force Band. (U.S. Air Force photo/Airman 1st Class Aaron Stout)