The Defense Department and F-35 prime contractor Lockheed Martin have "reached an agreement in principle" on contracts for the sixth and seventh production lots of the Joint Strike Fighter in a deal that includes buying five aircraft that were slated to be cut due to fiscal year 2013 budget reductions mandated by sequestration, the parties announced in a joint statement today. The pending deal, which still needs to be finalized, calls for the Pentagon to buy a total of 60...