One account says that an early designation for the F-111 Aardvark in the 1960 's was F-19.There is a roumour about a Northrop F-19A Specter , A Stealth Fighter that was built the same time as the F-117 Nighthawk but rejected for budgetary reasons , Both Northrop and Lockheed didnt know about each others projects .
Northop is rumored to have built the stealth fighter F-19A Specter parallel to and without knowledge of Lockheed 's F-117 Nighthawk , with the F-19A being rejected for budgetary reasons .