U.S. Marine Corps Lt. Col. Michael J. Harmon, left,

U.S. Marine Corps Lt. Col. Michael J. Harmon, left, the commanding officer of Marine Heavy Helicopter Training Squadron 302, presents a certificate of appreciation to Sgt. Maj. Kenneth L. Rademacher during a relief and appointment ceremony on Marine Corps Air Station New River, N.C., Oct. 29, 2015. The ceremony commemorated the passing of responsibility and authority from Sgt. Maj. Kenneth L. Rademacher to Sgt. Maj. James L. Robertson. (U.S. Marine Corps photo by Lance Cpl. Anthony J. Brosilow/Released)