U.S. Army Maj. Terrance Montgomery, McDonald Army Health Center chief financial officer, stands at parade rest in front of the Fort Eustis Color Guard during an assumption of command ceremony at Fort Eustis, Va., May 28, 2015. Montgomery commanded the color guard and troop formations during the ceremony. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Brig. Gen. Robert D. Tenhent, U.S. Army North Regional Medical Command commander, passes the colors to Lt. Col. Heidi Mon, McDonald Army Health Center commander, during an assumption of command ceremony at Fort Eustis, Va., May 28, 2015. The passing of the colors from the commanding officer to the officer assuming command represents trust in the new commander’s leadership. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Lt. Col. Heidi Mon, McDonald Army Health Center commander, speaks to her new command during her assumption of command ceremony at Fort Eustis, Va., May 28, 2015. Before assuming command of MCAHC, Mon was previously the Evans Army Hospital troop commander in Fort Carson, Colo. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Lt. Col. Heidi Mon, McDonald Army Health Center commander, takes command of her unit during her assumption of command ceremony at Fort Eustis, Va., May 28, 2015. Mon assumed command of the MCAHC, which provides care for more than 50,000 patients. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)