Upon completion of his Vietnamese language training, Bush was assigned to the 6499th Special Activities Group, Tan Son Nhut Air Base, Saigon, Vietnam. From May 1967 to May 1968, as an Intelligence Officer, he was responsible for the deployment and operations of six intelligence teams composed of 10-15 officers and enlisted men, operating from Saigon, Bien Hoa, Nha Trang, Pleiku, Da Nang and Can Tho. The teams were involved with significant intelligence operations, particularly involving the attack on Tan Son Nhut Air Base during the Tet Offensive and the defense of the Marines and South Vietnamese at the Battle of Khe Sanh. Bush was awarded the Bronze Star by 7th Air Force and the Joint Services Commendation Medal by Military Assistance Command, Vietnam, for his service in-country. In November 1968, 6499th Special Activities Group was awarded the Air Force Outstanding Unit Award for meritorious service during the period July 1966 to June 1968.