U.S. Air Force Challenge Coin,1.57 inches diameter, 0.12 inches thick. United States Liberty Eagle, and USAF Motto:Integrity first, Service before self, Excellence in all we do. The Airman's Creed is a creed for members of the U.S. Air Force. To commemorate the military career of veterans, perfect for retired soldier who holds his post for our country. A great gift for military lover, air force graduation airmen all coin collectors.