Lt. Col. Robert Nicholson (left) of Air Force Reserve Command’s Detachment 2, Fourth Air Force, March Air Reserve Base, and his oldest son, Capt. David Nicholson of the Michigan Air National Guard’s 127th Air Refueling Group, share a moment during Colonel Nicholson’s final KC-135 flight July 22, at Selfridge Air National Guard Base, Mich. The occasion was Col. Nicholson’s final KC-135 flight before his retirement after 37 years of service. The Air Force Reserve and the Air National Guard had to approve the training mission in order for the father and son to fly together. (U.S. Air Force photo)