The USAF Advanced Tactical Fighter (ATF) Program commenced in the 1970’s, then continued through the 1980’s and 1990’s, as a development, demonstration and evaluation program for a new USAF fifth generation fighter with stealth technology to complement and eventually replace the McDonnell Douglas F-15 Eagle air superiority fighter. Lockheed and Northrop proposals were accepted in October 1986 and the… Read More The Survivors: Northrop-McDonnell Douglas YF-23A Black Widow II Advanced Tactical Fighter