The combination of sequestration and a full-year continuing resolution will force the Air Force to buy at least two fewer Joint Strike Fighters than it planned in fiscal year 2013, while cutting $2 billion from sustainment and likely breaking its contract with Lockheed Martin to re-engine the C-5 cargo fleet, according to two senior service officials. However, the service believes its fixed-price contract with Boeing for the KC-46 tanker can be protected even if sequestration is triggered, the officials said,...