I well remember 1975 setting nuclear alert in USAF F-4s at RAF Lakenheath with one B-61 on the center-line and two wing tanks. In the map case was one eye-patch to be worn over the eye of your choice so that you would have one good eye after the first nuclear flash you inadvertently saw. In addition we had our trusty 38 revolver (we always thought to be used after witnessing the second nuclear flash). In general the targets we were hitting were weapons storage facilities and it was not uncommon to be the third or fourth weapon targeted against the facility. The first two were generally missiles.
Of course as we flew through the German countryside we were assured that all our compatriots were going to make their time-on-target within the established 3 minutes to assure de-confliction along the route. And of course we had to plan for a radar delivery when we knew that the first nuclear detonation would provide so much interference that we were very unlikely to see anything on our radars.
We also wondered about some “agent” with a hunting rifle setting off the end of the runway on common ground simply knocking us off as we taxied for take-off. But at least we could get our jets in the air in 15 minutes. And yes we did have a few “contingency plans”.