FORT WORTH, TX -- Joint Strike Fighter prime contractor Lockheed Martin is close to its projected plan to deliver 36 F-35 aircraft to multiple services and international customers in calendar year 2013, although a handful of jets may not be formally delivered until early 2014 because of weather delays. Those 36 aircraft will all require structural retrofits, software updates or both to enable them to be used in wartime operations because of the simultaneous testing and production built into the...