ORLANDO, FL -- Lockheed Martin's F-35 Joint Strike Fighter program manager said this week that a block buy among international partners is still possible in FY-17, but that shortened time frame is not the company's preference. The Air Force, Navy and Marine Corps opted not to pursue a block-buy agreement in their FY-17 budgets -- though they do include plans to invest a total of $537 million in the effort in FY-18. Lt. Gen. Christopher Bogdan, the program executive officer...