Different A-12: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;McDonnell_Douglas_A-12_Avenger_II" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;McDonnell_Douglas_A-12_Avenger...</a><p>You&#x27;re thinking of the first generation of what became the SR-71, which was made for the CIA, and used a different numbering scheme: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_A-12" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Lockheed_A-12</a>