Defense acquisition chief John Young has instructed managers of the Pentagon's most expensive weapon systems to submit performance goals for their programs that would improve the tracking of these systems' costs and effectiveness over their life cycles, according to Defense Department officials and documents. In a July 31 memo, Young gave the heads of the Pentagon's so-called major defense acquisition programs, or MDAPs, 60 days to submit "target goals" in the areas of materiel availability, materiel reliability and ownership cost...