Turkey expects to obtain a work share worth more than $5 billion for its local defense industry for the manufacture of the U.S.-led, next generation F-35 fighter aircraft, offsetting nearly half of the program's planned $11 billion cost for Turkish defense officials said. The production arrangement is viewed as a first step toward purchasing the fighter planes.National Defense Minister Vecdi Gönül arrived here late Wednesday to sign a document formalizing Turkey's participation in the F-35's production phase and for a meeting with new U.S. Secretary of Defense Robert Gates