2nd Lt. Shanti Nolan, United States Air Force Band conductor, guides artists in song during the 47th Annual Guest Artist Series at Daughters of the American Revolution Constitution Hall in Washington, D.C. on Feb. 26. The U.S. Air Force Band has endeared itself to millions of listeners for 70 years through its exhilarating music, engaging concerts and masterful recordings. (U.S. Air Force photo/ Staff Sgt. Nichelle Anderson)