Steel Knight Marines and sailors work to load an M1150 assault breacher vehicle onto an air-cushioned landing craft at Marine Corps Base Camp Pendleton, Calif., Dec. 5, 2019, during Steel Knight. The annual exercise tests Marines and sailors across a range of environments. SHARE: Download: Full Size (0.78 MB) Tags: Marine Corps, Training Credit: Marine Corps Lance Cpl. Angela Wilcox VIRIN: 191205-M-IU565-1131C.JPG Photo Gallery