The pre-Christmas decision to terminate the F/A-22 program after fiscal year 2008 will soon give way to a debate in the Pentagon and on Capitol Hill over just how many of the stealthy fighters the Air Force can afford with the money that remains. Program supporters believe the Air Force can buy as many as 180 new aircraft before the production line must be shut down to carry out Deputy Defense Secretary Paul Wolfowitz's Dec. 23 budget directive. That directive,...