Upper Heyford? Hey - you didn't work on the F-111's by chance did you? MHAFB ID vet here ;)
Yes, actually I did. As a matter of fact I wrote the ATLAS software that declassified the 4PI computer system in the EF when I was stationed at Cannon AFB. I PCS'd to SJAFB NC, worked in the F-15 Avionics Backshop until a few years ago. I am a retired E-7. I work at the RTP now as a programmer.