The F-35 joint program office says it has removed a hold on the delivery of Pratt & Whitney engines to the assembly facility in Fort Worth, TX, despite an ongoing investigation into a June 23 engine malfunction, which caused a fire onboard an Air Force jet. Deliveries had been on hold since May, first due to concerns about a particular parts supplier and then because of the fire incident at Eglin Air Force Base, FL. F-35 prime contractor Lockheed Martin...