Silent Drill Members of the Marine Corps Silent Drill Platoon perform during the Battle Color Ceremony for the San Antonio Tricentennial Military Appreciation Day at the Alamo, San Antonio, Texas, May 6, 2018. The Military Appreciation Day was held in San Antonio to salute military history with a weekend of programming. Marine Corps photo by Sgt. Robert Knapp SHARE IMAGE: Download Image: Full Size (1.55 MB) Photo By: Sgt. Robert Knapp VIRIN: 180506-M-RU248-068C.JPG Photo Gallery