When congress signed the John S. McCain National Defense Authorization Act,100% service connected disabled Veterans became eligible for Space Available Travel. Better known as ‘Space-A’ or military hops, Air Mobility Command (AMC) maintains an extensive network of flights throughout the continental United States, Alaska, Hawaii, Puerto Rico, the U.S. Virgin Islands, Guam and American Samoa. Supplementing this network, several Air National Guard and Naval Aviation Units have flights available.