Lt. Col. Chase Cunningham, U.S. Air Force Air Demonstration Squadron "Thunderbirds" commander, administers the oath of enlistment April 17, 2010, to 18 new Air Force Delayed Entry Program members in front of about 60,000 onlookers at the Sun-N-Fun Air Show in Lakeland, Fla. The oath of enlistment is a solemn vow all members of the Armed Forces take, dedicating their commitment to their nation. (U.S. Air Force/courtesy photo)