McDonnell Douglas A-12 Avenger II
The General Dynamics/McDonnell Douglas A-12 Avenger II was a proposed American attack aircraft from General Dynamics and McDonnell Douglas. It was to be an all-weather, carrier-based stealth bomber replacement for the Grumman A-6 Intruder in the United States Navy and Marine Corps.
Source: Wikipedia — McDonnell Douglas A-12 Avenger II (CC BY-SA 4.0)