US Air Force Presented by CMSGT Wanda A. Newsome, Eagle Challenge CoinMeasures Approximately: 1.75 InchesNo Special EdgingFront: Presented by CMSGT Wanda A. NewsomeBack: Lead, Follow, Or Get Out Of The Way...Challenge Coins are generally created for the Military and are prized by the service members that receive them. Perfect for Collectors of Militaria.