The F-35 Lightning II cruises over North Texas at 20,000 feet on Jan. 8. Turkey signed on for the next phase of the Joint Strike Fighter during a ceremony in Washington, D.C., Jan. 25. The agreement p

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The F-35 Lightning II cruises over North Texas at 20,000 feet on Jan. 8. Turkey signed on for the next phase of the Joint Strike Fighter during a ceremony in Washington, D.C., Jan. 25. The agreement provides a framework for future program efforts in production and beyond and will extend cooperation beyond the current development and demonstration agreement between the United States and the other eight Joint Strike Fighter partner nations — the United Kingdom, Italy, the Netherlands, Turkey, Canada, Denmark, Norway and Australia(Photo courtesy of Lockheed Martin)