In fairness to the parent poster, in the event of nuclear war an Air Force base with two runways longer than two miles each isn't an obscure target, it's just a target.
It's not just two runways it's the headquarters of the USAF Matrials Command since 1961 I think. Which is the biggest airforce command (by budget). They are responsible for running most R&D labs of the Airforce and for procuring new weapon systems and airplanes. It certainly would have been a major target. Dayton in many ways is still the birth place of new trends in aviation.
Guess which is a more important target to the enemy in the event of an all-out war: the runways, hangars, and fuel facilities or the research and development offices. (I mean, it's sort of an academic question if a well-placed enemy warhead makes it through...)
In the imagined scenario of a 1980s MAD first-strike, it's wherever the nuclear missile silos are. There's a lot of farmland around Dayton. I would not rule out the possibility that there is at least one nuclear launch site near Wright Patterson AFB.