Master Sgt. Matthew Geist, U.S. Air Force Band premier bandsman, plays guitar at the Sylvan Theatre, District of Columbia, June 3, 2015. Members of the U.S. Air Force Band’s Concert Band and Singing Sergeants performed a concert at the Sylvan Theatre, near the Washington Monument. (U.S. Air Force photo/ Airman 1st Class J.D. Maidens)