sentences:  Côn Sơn is the largest township on the island and was also the seat of the local government.By the end of the Vietnam War, about 7,000 political and military prisoners, of whom 500 were female, were imprisoned at Côn Đảo Prison.On April 29, 1975, the airfield at Côn Sơn became a staging post where South Vietnamese government officials and U.S. advisers were assembled, to be evacuated to the U.S. warships of the 7th Fleet which anchored nearby.