David Gust, president of the North Dakota Agricultural Aviation Association, reaches to shake the hand of Master Sgt. Daniel Shannon, superintendent of the 319th Air Base Wing safety, after initially being greeted by Lt. Col. Rudolf Kuehne, the 319th ABW chief of safety, minutes after he landed his BE-35B Beechcraft on Grand Forks Air Force Base, N.D.,in order to attend the 2014 M.A.C.A. Civil Fly-In held June 14, 2014. Gust was one of 55 people from various flying clubs and organization that attended the event in support of the base’s Mid-Air Collision Avoidance program, which is what M.A.C.A. stands for. (U.S. Air Force photo/Staff Sgt. Luis Loza Gutierrez)