Workers can be seen on the moving line and forward fuselage assembly areas for the F-35 Joint Strike Fighter at Lockheed Martin Corp's factory located in Fort Worth, Texas in this October 13, 2011 ... more 
Workers can be seen on the moving line and forward fuselage assembly areas for the F-35 Joint Strike Fighter at Lockheed Martin Corp's factory located in Fort Worth, Texas in this October 13, 2011 file photo provided by Lockheed Martin. Lockheed Martin Corp on February 25, 2013. (REUTERS/Lockheed Martin/Randy A. Crites/Handout) less 
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Reuters | Photo By HANDOUT / REUTERS
Wed, Dec 4, 2013 8:14 PM EST