AFB and its 309th Aerospace Maintenance and Regeneration Group (309th AMARG). In January 1959. B-52s from Carswell were constantly in the air and flying to Europe, Asia, and North Africa. On 13 April 1965, the 7 BW deployed its forces to Andersen Air Force Base, Guam to support SAC combat operations in Southeast Asia. Most of the wing's bombers and tankers, along with aircrews and some support personnel, were deployed. At Andersen AFB, the wing flew more than 1,300 missions over Vietnam and returned to Carswell in December 1965. B-52 crews were sent through an intensive two-week course on the B-52D, making them eligible for duty in Southeast Asia. B-52s assigned to combat duty in Vietnam were painted in a modified camouflage scheme with the undersides, lower fuselage, and both sides of the vertical fin being painted in a glossy black. The USAF serial number was painted in black on the fin over a horizontal red stripe across the length of the fin. The B-52 effort was concentrated primarily against suspected Viet Cong targets in South Vietnam, but the Ho Chi Minh Trail and targets in Laos were also hit. During the relief of Khe Sanh, unbroken waves of six aircraft, attacking every three hours, dropped bombs as close as from friendly lines. Cambodia was increasingly bombed by B-52s from March 1969 onward. Rotational deployments to Guam, and also to U-Tapao Royal Thai Navy Airfield, Thailand continued on a reduced scale until 1975. In the 1980s the 7th received several new weapons systems, including modified B-52H aircraft. In 1983, B-52 crews began training with a new weapon system, the SRAM (Short Range Attack Missile), and later, in 1985, the ALCM (Air Launched Cruise Missile). Also, the wing flew numerous atmospheric sampling missions during 1986 and 1987 in response to the Chernobyl nuclear reactor accident; four B-52H aircraft (s/n 60-0024, 60-0033, 60-0051, and 60-0052) were modified to carry atmospheric sampling pods code-named "Giant Fish". These aircraft flew the mission into the 1990s from various bases including Carswell. By 1984 Carswell was the largest unit of its kind in the Strategic Air Command. The 7 BW contributed personnel to Operation Desert Storm in the Middle East in 1991. After an overwhelming victory in the Persian Gulf, the wing returned to Carswell. In September 1991 with the end of the Cold War, President Bush ordered a stand-down of all nuclear alert duties. 43d