Training View Marines prepare for obstacle clearing detachment training during exercise Steel Knight 2019 at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Nov. 28, 2018. Download Image: Small (296.96 KB) | Medium (1198.08 KB) | Full Size (1.01 MB) Tags: Marine Corps Photo By: Marine Corps Sgt. Miguel Rosales | VIRIN: 181127-M-WQ429-1005X.JPG More Photos