Parr then served as Deputy Commander for Operations of the 12th Tactical Fighter Wing at Cam Ranh Base, South Vietnam, from September 1967 to August 1968, flying F-4 Phantom.
He received the Air Force Cross during the siege of Khe Sanh in 1968, for destroying several mortar and machine gun positions of the Viet Cong troops in one aerial sortie.
Then completing seven out of eight combat approaches, while flying a heavily damaged F-4, which thereby not only impaired the hostile force’s capability to impede the resupply of Khe Sanh, but also reduced further losses to friendly cargo aircraft and crews.
He also was nominated for Medal of Honor by the U.S. Marine Corps command in Khe Sanh.

Following the completion of his first tour in Vietnam, he served on the staff of the Military Personnel Group at Randolph Air Force Base, Texas, from October 1968 to March 1970.
During his second tour in Vietnam, he served as the Vice Commander of the 12th TFW at Phù Cát Air Base, South Vietnam, from March to October 1970, and then as Commander of the 12th TFW from October 1970 to April 1971.
Parr then served as Deputy Commander for Operations of the 12th Tactical Fighter Wing at Cam Ranh Base, South Vietnam, from September 1967 to August 1968, flying F-4 Phantom. He received the Air Force Cross during the siege of Khe Sanh in 1968, for destroying several mortar and machine gun positions of the Viet Cong troops in one aerial sortie. Then completing seven out of eight combat approaches, while flying a heavily damaged F-4, which thereby not only impaired the hostile force’s capability to impede the resupply of Khe Sanh, but also reduced further losses to friendly cargo aircraft and crews. He also was nominated for Medal of Honor by the U.S. Marine Corps command in Khe Sanh.
Following the completion of his first tour in Vietnam, he served on the staff of the Military Personnel Group at Randolph Air Force Base, Texas, from October 1968 to March 1970. During his second tour in Vietnam, he served as the Vice Commander of the 12th TFW at Phù Cát Air Base, South Vietnam, from March to October 1970, and then as Commander of the 12th TFW from October 1970 to April 1971.
Ralph Parr