7/10/2012 - GOODFELLOW AIR FORCE BASE, Texas - Col. Mark Damiano, 17th Training Wing commander, passes the 17th Training Group guidon to Col. Brendan Harris, during a change of command ceremony July 10. Harris assumed command of the 17th TRG from Col. JD Willis. (U.S. Air Force photo/Staff Sgt. Laura R. McFarlane)