Indeed, in the first four years of his six-year commitment, Bush spent the equivalent of 21 months on active duty, including 18 months in flight school. His Democratic opponent, Vice President Al Gore, who enlisted in the Army for two years and spent five months in Vietnam, logged only about a month more active service, since he won an early release from service.

Incidentally, Bush flew with the 111th Fighter-Interceptor Squadron, which was attached to the 147th Fighter Wing, based in Houston, Texas. While Bush's unit never got called to Vietnam, the 147th was. From 1968 through 1970, pilots from the 147th participated in operation "Palace Alert" and served in Southeast Asia during the height of the Vietnam War. The 147th came off runway alert on Jan. 1, 1970 to start a new mission of training all F-102 pilots in the United States for the Air National Guard.

Bush enlisted as an Airman Basic in the 147th Fighter-Interceptor Group at Ellington Air Force Base, Houston, on May 28, 1968 - a a time when the 147th was actively participating in combat in Vietnam. However, one can not train overnight to be a pilot. Bush completed basic flight training and then, from December 1969 through June 27, 1970, he was training full-time at Ellington to be an F-102 pilot.

Bush volunteered to serve in a unit at the very moment it was seeing combat in Vietnam, and only a restructuring of the unit's mission before he completed his flight training made it unlikely he would fly in combat. And he was never AWOL - he completed his required service and even served beyond the minimum.