The final price tag for the next-generation Air Force tanker contract could be up to $50 billion, according to a military official. "There are a lot of variables [associated with the final cost of the contract award], and we're going to get some of those answers from the offers that come in," the military official told reporters during a background briefing at the Pentagon today. "I think I would simply bound [the award amount] as somewhere between $25 [billion] and...