NEW YORK -- The Air Force hopes to use funds designated in its fiscal year 2009 spending proposal to shut down the F-22A fighter aircraft line instead as a down payment toward an additional 20 aircraft, part of a new strategy to keep the high-tech aircraft assembly line warm until the F-35 Joint Strike Fighter moves into production in 2013. Air Force Secretary Michael Wynne said yesterday that the bid to extend F-22A production, which is set to conclude in...