Zaire to have replaced "Zaire" gradually in English usage during the 18th century, and "Congo" is the preferred English name in 19th-century literature, although references to "Zahir" or "Zaire" as the name used by the natives (i.e. derived from Portuguese usage) remained common. In 1965, as in 1960, the division of power in Congo-Léopoldville between President and Parliament led to a stalemate and threatened the country's stability. Joseph-Désiré Mobutu again seized power. Unlike the first time, however, Mobutu assumed the presidency, rather than remaining behind the scenes. From 1965, Mobutu dominated the political life of the country, restructuring the state on
27th Special Operations Wing short. In the summer of 1971 wing aircrews ferried the last of them to RAF Upper Heyford England. In 1971, the 27th TFW received the first of its F-111Ds, and in July 1972, the last operational active duty Air Force F-100s were transferred from the 27th TFW to the Air National Guard. The mission of the 27th TFW expanded in 1988 as a result of decisions made by the Defense Department Base Realignment and Closure Commission (BRAC) when the 27th was equipped with the F-111G. (The "G" model was a conversion of the SAC FB-111A all-weather strategic bombing version of