A long time ago, I used to build the Intergrated Circuits for the guidance systems of these.
And my uncle helped design them in St. Louis at McDonnell Douglass (or was it just McDonnell back then?) He was there for a very long time, since the mid 50s I think, until he went to work for Boeing, before the buy-out. He was very proud of the work he did there, especially on the F4 and the F15.
Mark