Keywords: Drop the Beat (6981859835).jpg Gunnery Sgt Keith Martinez the U S Marine Drum Bugle Corps assistant drum major signals the unit while passing in review during a Battle Color Detachment ceremony at Marine Corps Recruit Depot San Diego March 10 2012 U S Marine Corps photo by Cpl Dengrier Baez https //www flickr com/photos/marine_corps/6981859835/ Drop the Beat 2012-03-09 12 05 https //www flickr com/people/40927340 N03 Marines from Arlington VA United States PD-USGov United States Marine Corps Official Page https //flickr com/photos/40927340 N03/6981859835 2016-09-03 23 35 47 United States Government Work Amphibious forces Color guards Color guards of the United States Marines United States Marine Drum and Bugle Corps |