The Pentagon's top weapons buyer has declared current Air Force and Navy strategic forces modernization plans unaffordable, unless the Defense Department can secure an additional $10 billion to $12 billion annually beginning in 2021, a monumental bill confounding DOD leaders who aim to begin budgeting for a new bomber and submarine in the fiscal year 2017 budget that is now being drafted. Near-simultaneous plans to develop and buy the Ohio-class replacement submarine, a new long-range strike bomber, a new intercontinental...