A notional three-year Joint Strike Fighter "block-buy contract" between the United States and foreign buyers could net $2 billion in savings, according to a revised assessment of the potential agreement that is lower than a previous $3 billion tally but also accounts for reduced U.S. military participation in such a deal. RAND Project Air Force has updated an assessment the F-35 joint program office commissioned to explore the possibility of a block-buy contract beginning as soon as fiscal year 2018...