Warm Up Marine Corps Sgt. Ashtyn Hammer, a stableman with the Marine Corps Mounted Color Guard, gets in a warm-up ride with her horse before the presentation of colors at the annual Barstow Rodeo kickoff in Barstow, Calif., Sept. 19, 2019. SHARE IMAGE: Download Image: Full Size (0.88 MB) Tags: Marine Corps Photo By: Rob Jackson, Marine Corps VIRIN: 190919-M-EL583-001C.JPG Photo Gallery