The Defense Department reported a net increase of $4.5 billion over the last year in total program cost for its entire portfolio of major weapon system programs -- a collection of 79 big-ticket projects that accounted for $73 billion in the fiscal year 2016 budget -- with the F-35 Joint Strike Fighter program, the Pentagon's single biggest acquisition, notching the largest reduction in estimated acquisition cost. On March 24, the Pentagon disclosed a summary of its report to Congress of...