CAMP PENDLETON, Calif. (Dec. 2, 2020) Marines and Sailors aboard the Wasp-class amphibious assault ship USS Essex (LHD-2) post security from the flight deck during exercise Steel Knight/Dawn Blitz (SK/DB) 21 off the coast of Southern California, Dec. 4, 2020. SK/DB 21 demonstrates 1st Marine Division's and Expeditionary Strike Group's (ESG) ability to employ the Corps' largest Marine division, alongside our Navy counterparts, against a capable, peer or near-peer adversary. (U.S. Marine Corps photo by Lance Cpl. Cameron Rowe)