The estimated cost for the Air Force's KC-46A aerial refueling tanker development contract appears to be leveling out at $6.4 billion, more or less unchanged from last year, according to a service spokesman -- an assessment that holds prime contractor Boeing's exposure steady at $1.5 billion for cost growth beyond the contract ceiling price. Daryl Mayer, a spokesman for the Air Force, said a cost estimate completed last year by the KC-46 program manager assesses the estimated price at completion...
