Chief Master Sgt. Kevin Muehler, the 119th Wing command chief, right, presents the Community College of the Air Force degree to Master Sgt. Christopher Walberg, the 119th Mission Support Group first sergeant, during a ceremony at the North Dakota Air National Guard base, Fargo, N.D., Jan. 12, 2013. The community College of the Air Force degree is now required for enlisted personnel to be eligible for promotion to the ranks of Senior Master Sergeant and Chief Master Sergeant.