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)

Tech. Sgt. Daniel Anderson, a tenor vocalist with the Singing Sergeants in The United States Air Force Band, sings Verdi’s, “Rigoletto” at The USAF Band’s concert, “A Night at the Opera,” in Washington, D.C., Aug. 16, 2013. (U.S. Air Force photo/Airman 1st Class Nesha Humes)

Audience members applaud after a performance by The United States Air Force Band in Washington, D.C., Aug. 16, 2013. More than 100 people attended the free concert held at The Air Force Memorial. (U.S. Air Force photo/Airman 1st Class Nesha Humes)

Retired Col. Arnold D. Gabriel, United States Air Force Band Conductor Emeritus, concludes the performance of Giroux’s “The Italian Rhapsody,” during a concert at The Air Force Memorial in Washington, D.C., August 16, 2013. Gabriel was a combat machine gunner with the United States Army’s 29th Infantry Division in Europe during World War II, and was awarded two Bronze Star medals, the Combat Infantryman’s Badge and the French Croix de Guerre. (U.S. Air Force photo/Airman 1st Class Nesha Humes)(Released)

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)

The United States Air Force Band’s flutist, Tech Sgt. Megan Neal, performs in Washington, D.C., Aug. 16, 2013. The free concert, “A Night at the Opera,” held at The Air Force Memorial, featured soloists and members of The USAF Concert Band the Singing Sergeants. (U.S. Air Force photo/Airman 1st Class Nesha Humes)

Tech. Sergeants Mandi Harper and Emily Wellington take bow after performing Delibes’s “Flower Duet” during the United States Air Force Band’s concert in Washington, D.C., August 16, 2013. More than 100 people attended the free concert held at The Air Force Memorial. (U.S. Air Force photo/Airman 1st Class Nesha Humes)(Released)