B-1 simulator tours available for Airmen and their families Published Dec. 13, 2016 28th Bomb Wing Public Affairs ELLSWORTH AIR FORCE BASE, S.D. -- The 28th Operations Support Squadron will be hosting B-1 bomber simulator holiday tours for Airmen and their families beginning Dec. 19 through Dec. 21 from 9 a.m. to 3 p.m. Airmen interested should reach out to the point of contact for their group to sign up – space is limited.