Retired Col. Arnold D. Gabriel, United States Air Force Band Conductor Emeritus, finishes conducting his performance of Mascagni’s “Intermezzo Sinfonica” during the United States Air Force Band concert, “A Night at the Opera,” in Washington, D.C., Aug. 16, 2013. An internationally renowned conductor, Gabriel led the USAF Band for 21 years. (U.S. Air Force photo/Airman 1st Class Nesha Humes)(Released)