Nguyễn Cao Kỳ
At the age of 23, Karl Richter had become the youngest American pilot to shoot down a MiG over Vietnam. Richter went to Saigon to receive the personal congratulations of Lt. Gen. William W. Momyer, Seventh Air Force commander, and again at the personal invitation of Premier Nguyễn Cao Kỳ when he was awarded the Vietnamese Distinguished Service Medal.