sentences:  Until at least 1980 it served as one of three bases for the Soviet Union's Tupolev Tu-95 "Bear" long-range bomber fleet.The nearby Dolon Southwest, a former airfield 32 km to the south, was probably a dispersal field and no longer exists.In 1955, Dolon was one of only six Soviet bases capable of handling the Myasishchev M-4 (Bison) bomber.