Gunnery Sgt. Justin A. Hauser (right), an enlisted conductor with Marine Corps Band New Orleans, leads the band in a rendition of “The Marines’ Hymn” during the 31st annual reunion and muster of the Marine Corps Mustang Association at the Astor Crowne Plaza French Quarter Hotel in New Orleans, Aug. 18, 2016. The theme of the evening event was the Marine Corps Reserve centennial celebration, which begins with events around the country later this month. (U.S. Marine Corps photo by Sgt. Ian Leones/Released)