No, it was the F-5. Northrup submitted plans and the joint Navy / Air Force committee said it did not meet their request for a submittal, and Northrup responded it wasn't a response to their request, it was a fighter they were going to build for export sales and they were submitting plans for review as required by law. The Navy and Air Force were not impressed, but they did agree top take two prototypes to review. The F-5 went on to a long an illustrious career as aggressor ships for both services at Red Flag and Top Gun, and sold in large numbers overseas, being outfitted as everything from air superiority craft to night fighters to ground assault craft. And the T-38 of course became the standard jet trainer. Long Ago when engaged in the pursuit, I thought we could have built so much better a submarine for so much less money if we hadn't had government "oversight". It was only much later that I realized the goal was not to save money, but to spend it.