A sweeping defense review now under way may usher significant changes to what Pentagon officials call its "force planning construct" -- a key metric for shaping U.S. war plans, justifying the total size of the uniformed ranks and establishing the roster of needed combat gear, according to a senior Pentagon official. Ryan Henry, principal deputy under secretary of defense for policy, said the 2005 Quadrennial Defense Review will examine how well the "1-4-2-1" construct -- crafted before the 9/11 terrorist...