History of the B-1B 'Lancer at the GFAFB. 1986Ð1987 The 319th Bombardment Wing converted from the B-52G Stratofortress and KC-135A Stratotanker to the B-1B 'Lancer' and KC-135R 'Stratotanker'. May 26, 1994 The last B-1B 'Lancer' departed from Grand Forks AFB, marking the end of over 30 years of bombers at Grand Forks.