The Air Force and Lockheed Martin are giving a secret retirement send-off to the world's first radar-evading fighter.They were born shrouded in mystery in a windowless building in Burbank. They flew combat missions over Serbia and Iraq virtually invisible to enemy radar. And today, the black, bat-like F-117A Night Hawks will fly quietly into the night as stealthily as they came. The last four of the world's first stealth fighters will make their final flights from Palmdale to a secret desert base in Nevada, where they will be locked up indefinitely in a secure concrete hangar. But unlike the passing...