Digging Deep Marine Corps Lance Cpl. Nicholas Singleton shovels dirt to free a Humvee from a ditch at Marine Corps Base Camp Pendleton, Calif., Dec. 5, 2019, during Steel Knight, an annual exercise that tests Marines and sailors across a range of environments. SHARE: Download: Full Size (0.96 MB) Tags: Marine Corps, Steel Knight Credit: Marine Corps Lance Cpl. Angela Wilcox VIRIN: 191205-M-IU565-1087C.JPG Photo Gallery