Some B-1B Lancers resume flight after safety stand-down By (0) Aircrew members with the 9th Bomb Squadron conduct preflight inspections in a B-1B Lancer at Dyess Air Force Base in Texas April 19. This aircraft was flown to Tinker AFB, Okla. for structures prototyping evaluation. Photo by David Owsianka/U.S. Air Force May 6 (UPI) -- The first B-1B Lancers resumed flight operations this week following a safety stand-down issued last month, the Air Force announced Thursday. According to the Air Force's press release, individual B-1Bs will return to flight as inspections and maintenance are completed on each aircraft.