Steel Knight Amphibious assault vehicles proceed to assault to an objective following an amphibious landing during Exercise Steel Knight on Marine Corps Base Camp Pendleton, Calif., Dec. 4, 2015. Steel Knight tests the Marine Air Ground-Task Force’s expeditionary capabilities through realistic, scenario-driven training. U.S. Marine Corps photo by Sgt. Justin Boling SHARE IMAGE: Download Image: Full Size (0.54 MB) Photo By: Sgt. Justin Boling VIRIN: 151204-M-TE668-003.JPG Photo Gallery