Col. Tye R. Wallace, commanding officer of the 31st

Col. Tye R. Wallace, commanding officer of the 31st Marine Expeditionary Unit, right, salutes the flag alongside past and present sergeant majors of the 31st Marine Expeditionary Unit during a post and relief ceremony at Camp Hansen, Okinawa, Japan, April 27, 2018. Sgt. Maj. Jim Lanham relinquished the sword to Sgt. Maj. Edwin Mota during the ceremony. Mota assumed duties as the 31st MEU sergeant major after leaving 2nd Raider Battalion and Lanham is slated to assume duties as sergeant major of 12th Marine Corps District at Marine Corps Recruit Depot San Diego, California, During Lanham’s tenure, the 31st MEU supported several exercises across the Indo-Pacific region, including Philippines Amphibious Landing Exercise, Exercise Cobra Gold in Thailand and Exercise Talisman Saber in Australia. (U.S. Marine Corps photo by Lance Cpl. Amy Phan/Released)