Congress is slowly becoming comfortable with retirements of legacy aircraft, especially the A-10 Warthog, but first it wants the Air Force to consider ways it can use "existing aircraft to a greater advantage," Rep. Rob Wittman (R-VA) told Inside Defense Thursday evening. “The checkbook is not unlimited,” Wittman, chairman of the House Armed Services tactical air and land forces subcommittee, said following an event at the Council on Foreign Relations. So, if the Pentagon is going to keep older...