The Office of the Secretary of Defense is considering adding tens of billions of dollars to the Army's base budget in the Pentagon's new six-year spending plan in order to address funding shortfalls that service officials say could threaten the viability of U.S. ground forces, according to Defense Department officials. Pentagon officials say an Army request for an additional $23 billion to its fiscal year 2008 budget -- and further additions on that order each year through 2013 -- are...