11/30/2012 - Col. Rick Grayson, 446th Airlift Wing vice commander, (left) and Col. Jeffrey Philippart, 62nd AW vice commander, render salutes Nov. 30, in remembrance of 13 aviators who died 20 years ago this day in 1992. The 13 McChord Airmen were killed when two C-141s from McChord Air Force Base, Wash., collided over Montana during an air refueling training mission. (U.S. Air Force photo by Sandra Pishner)

11/30/2012 - McChord Reserve and active-duty Airmen held a small memorial Nov. 30, in remembrance of 13 aviators who died 20 years ago this day in 1992. The 13 McChord Airmen were killed when two C-141s from McChord Air Force Base, Wash., collided over Montana during an air refueling training mission. (U.S. Air Force photo by Sandra Pishner)

11/30/2012 - Reserve and active-duty Airmen remember 13 aviators Nov. 30, 2012 on the 20th anniversary of the tragic collision of two C-141s from McChord Air Force Base, Wash., Nov. 30, 1992. The two aircraft collided over Montana during an air refueling training mission, killing 13 Airmen. (U.S. Air Force photo by Sandra Pishner)

11/30/2012 - McChord Reserve and active-duty Airmen held a small memorial Nov. 30, in remembrance of 13 aviators who died 20 years ago this day in 1992. The 13 McChord Airmen were killed when two C-141s from McChord Air Force Base, Wash., collided over Montana during an air refueling training mission. (U.S. Air Force photo by Sandra Pishner)