(From left to right) Lt. Col. David Beaver, 905th Air Refueling Squadron, Pam Beaver, Christine Bradford, Lt. Col. Noel Bradford, 905th Air Refueling Squadron commander, Amy Sauls and Army Lt. Col. Josh Saul, University of North Dakota Army ROTC commander, pose for a photo during the Grand Forks Air Force Base Air Force Ball on Sept. 17, 2010, at the Ralph Englestad Arena in Grand Forks, N.D. The United States Air Force ended a 40-year association with the United States Army when President Harry S. Truman signed the National Security Act of 1947; Sept. 18, 2010, marked the 63rd anniversary of the U.S. Air Force. (U.S. Air Force photo by Staff Sgt. Suellyn Nuckolls)