U.S. Marine Corps Lt. Col. Tracy Perry, left, commanding

U.S. Marine Corps Lt. Col. Tracy Perry, left, commanding officer of Support Battalion (SPT BN), Recruit Training Regiment (RTR), Marine Corps Recruit Depot (MCRD) San Diego, presents the Meritorious Service Medal to Sgt. Maj. Adebola O. Osinowo, offgoing sergeant major of SPT BN, RTR, MCRD San Diego, at MCRD San Diego, Calif., Jan. 20, 2017. The medal was presented to Osinowo, who relinquished his post as SPT BN sergeant major to Sgt. Maj. Gerardo C. Ybarra, during a relief and appointment ceremony. (U.S. Marine Corps photo by Lance Cpl. Erick J. ClarosVillalta)