The Pentagon's fiscal year 2018 budget request proposes trimming 11 aircraft -- or 17 percent -- from planned MV-22 Osprey aircraft purchases across the Navy and Marine Corps' five-year spending forecast, while also seeking authorization for a seven-year block buy of the Bell-Boeing-built weapon system. The FY-18 budget request anticipates buying 53 MV-22s between FY-18 and FY-22 for $4.4 billion, though the Pentagon's FY-17 spending plan anticipated buying 64 Ospreys over the same period for $5.2 billion. The Navy's budget...