When nukes were under the control of Strategic Air Command and their stringent standards there were very few security incidents and none like this. When SAC went away and they put missiles and bombers under what was Tactical Air Command, the standards quickly fell off and it wasn’t too long after I retired that incidents began to occur. Most of those who are now in command positions either never served under SAC nuclear surety requirements or they served one tour as a crew dog. SAC pounded all of us, operations and staff, on a daily basis and God help you if you failed any nuclear surety test or broke any of the rules. Those days are gone, unfortunately for all of us.
You probably remember the time one SAC base failed its inspection and the base commander had them on 12 hour shifts with no days off for over six months.
Nowadays that would be considered cruel and unusual punishment.