Congo River and "Congo" is the preferred English name in 19th-century literature, although references to "Zahir" or "Zaire" as the name used by the inhabitants remained common. The Democratic Republic of the Congo and the Republic of the Congo are named after it, as was the previous Republic of the Congo which had gained independence in 1960 from the Belgian Congo. The Republic of Zaire during 1971–1997 was also named after the river, after its name in French and Portuguese. The Congo's drainage basin covers , an area larger than India. The Congo's discharge at its mouth ranges from , with an
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