U.S. Service members listen to retired U.S. Air Force Lt. Col. Donald Odell, 2015 National Prayer Breakfast Observance guest speaker, during the event at Langley Air Force Base, Va., March 25, 2015. Odell was a 94th Fighter Interceptor Squadron pilot who was held as a prisoner of war for more than five years during the Vietnam War. (U.S. Air Force photo by Senior Airman Breonna Veal/ Released)