in the Training Command, BuNo 137796, departed for Naval District Washington on 14 March 1984 to be displayed permanently at Naval Support Facility Anacostia, D.C. Vietnam War combat In 1963, a Royal Lao Air Force T-28 piloted by Lieutenant Chert Saibory, a Thai national, defected to North Vietnam. Saibory was immediately imprisoned and his aircraft was impounded. Within six months the T-28 was refurbished and commissioned into the North Vietnamese Air Force as its first fighter aircraft. T-28s were supplied to the Republic of Vietnam Air Force (RVNAF) in support of ARVN ground operations, seeing extensive service during the Vietnam War in RVNAF hands, as well as the Secret War in Laos. A T-28 Trojan was the first US fixed wing attack aircraft (non-transport type) lost in South Vietnam, during the Vietnam War. Capt. Robert L. Simpson, USAF, Detachment 2A, 1st Air Commando Group, and Lt. Hoa, RVNAF, were shot down by ground fire on August 28, 1962 while flying close air support. Neither crewman survived. The USAF lost 23 T-28s to all causes during the war, with the last two losses occurring in 1968. Other combat uses T-28s were used by the CIA in the former Belgian Congo during the 1960s. The T-28B and D were the primary ground attack aircraft of Khmer Air Force in Cambodia during the war there, largely provided from the U.S. Military Equipment Delivery Team and maintained by Air America. On the night of 21 January 1971, PAVN sappers managed to get close enough to destroy the majority at Pochentong airbase. Replacements were quickly shipped in. On 17 March 1973 a pilot of a T-28, said to be Capt. So Petra, a common-law husband of one of the daughters of the overthrown Prince Norodom Sihanouk, machine gunned and bombed the palace of Lon Nol in an attempt to assassinate him, killing at least 20 and wounding 35, before defecting to Khmer Rouge held lands. France's Armée de l'Air used locally re-manufactured Trojans, T-28S Fennec, for close support missions in Algeria. Nicaragua replaced its fleet of 30+ ex-Swedish P-51s with T-28s in the early 1960s, with more aircraft acquired in the 1970s and 1980s. The Philippines utilized T-28s (colloquially known as "Tora-toras") during the 1989 Philippine coup attempt. The aircraft were often deployed as dive bombers by rebel forces. Civilian use AeroVironment modified and armored a T-28A to fly weather research for South Dakota School