George Casey served from 2003 to 2004 as the 30th Vice Chief of Staff of the Army. On April 10, 2007, General George CaseyJr., became the 36th Chief of Staff of the U.S. Army. His father commanded the 1st Cavalry Division in Vietnam and was killed on July 7, 1970 when his command helicopter crashed in South Vietnam en route to a hospital to visit wounded U.S. soldiers.