Defense Secretary Robert Gates plans to direct major changes to the Pentagon's long-term weapons system investment plans this spring as part of an accelerated schedule for the upcoming Quadrennial Defense Review, a previously unreported goal that would give the Obama administration a better-informed opportunity to significantly reshape the fiscal year 2010 defense budget proposal. Gates outlined his plan for a quick start to the QDR to the military service chiefs and combatant commanders during a two-day conference last week, according...