SAN DIEGO (Dec. 6, 2021) Marines from 3rd Battalion, 1st Marines disembark amphibious landing ship dock USS Harpers Ferry (LSD 49) during exercise Steel Knight 22 (SK 22), Dec. 6, 2021. SK 22 is a 1st Marine Division led annual training exercise which enables the Navy-Marine Corps team to operate in a realistic, combined-arms environment to enhance naval warfighting tactics, techniques and procedures. (U.S. Navy photo by Ensign Jon Saadey)