First Lt. Steve Ferrell, left, 28th Test and Evaluations Squadron operations analyst at Eglin Air Force Base, Fla., signs enlistment paperwork April 9 for his father, Chief Master Sgt. Steven Ferrell, 61st Aircraft Maintenance Unit superintendant. Lieutenant Ferrell flew in to Luke to swear-in his father and did it in front of about 150 Airmen in the 61st AMU. (U.S. Air Force photo/2nd Lt. Ryan DeCamp)