(Editor's Note: This story has been updated with a statement from Pratt & Whitney, the F-35's engine manufacturer) Joint Strike Fighter program officials have lifted a ban on flights of the F-35B short-takeoff-and-vertical-landing aircraft nearly a month after an incident in Florida led to the fleet's grounding. In a statement, F-35 program spokesman Joe DellaVedova said today that Naval Air Systems Command and the joint program office gave the approval for the Marine Corps' version of the jet to...