The total size of the Mine Resistant Ambush Protected vehicle program in fiscal year 2008 will remain unclear until two key Defense Department assessments are completed, according to a previously unreported eight-page budget document prepared by the Pentagon. The White House last month requested an additional $5.3 billion for MRAP vehicles, enough to acquire 1,520 vehicles and bring the total size of the blast-proof truck fleet to 8,000. How many more MRAP vehicles the Pentagon plans to build in FY-08...