The Air Force has moved to restructure the way it sustains the B-1 bomber with this week's award of a sole-source contract to Boeing, worth up to $750 million over five years, that covers an extremely broad set of engineering support. In the past, the B-1 Lancer was sustained under a multibillion-dollar, all-encompassing contract with Boeing known as BONE, which covered modifications, structural work and engineering requirements for the aircraft. For reasons associated with financial limitations on BONE and a...