The Colorado Army National Guard is a component of the United States Army, United States National Guard, and Colorado National Guard. Nationwide, the Army National Guard comprises approximately one half of the US Army's available combat forces and approximately one third of its support organization. National coordination of various state National Guard units is maintained through the National Guard Bureau. The Colorado Army National Guard is composed of over 3500 soldiers, maintaining 30 armories in 24 communities (as of 1999).