The Marine Corps' version of the Joint Strike Fighter won't achieve initial operational capability until 2014 or 2015, and the schedule for the Navy's F-35C carrier variant is also certain to slip, senior service officials testified on Capitol Hill today. Marine Lt. Gen. Terry Robling, deputy commandant for aviation, told the Senate Armed Services airland subcommittee today that while the service has not settled on an IOC for the F-35B -- the Marines' short-take-off and vertical-landing variant -- it will...