U.S. Army Maj. Gen. Jeffrey E. Phillips, U.S. Army Reserve deputy commander, right, cuts the U.S. Army Reserve birthday cake with Private 1st Class Jose Gonzales, 1st-1222 Bravo Company Aviation Regiment avionic mechanic, at U.S. Army Training and Doctrine Command on Fort Eustis, Va., April 23, 2015. Gonzales was selected as the youngest Army Reserve Soldier in the local area to cut the cake with the General. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Lt. Gen. Kevin W. Mangum, U.S. Army Training and Doctrine Command deputy commander, re-enlists two U.S. Army Reserve Soldiers at TRADOC on Fort Eustis, Va., April 23, 2015. Mangum enlisted the two soldiers as part of the U.S. Army Reserve’s 107th birthday celebration. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)

U.S. Army Lt. Gen. Kevin W. Mangum, U.S. Army Training and Doctrine Command deputy commander, speaks of the important role the Army Reserve plays in mission success during the U.S. Army Reserve’s 107th birthday celebration at TRADOC on Fort Eustis, Va., April 23, 2015. During the celebration, the oldest and newest member of the Reserve cut the birthday cake together and two Soldiers were re-enlisted. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)