October 25, 1962 - Cuban Missile Crisis
A bear sniffing around a perimeter fence at Duluth Sector Direction Center in Minnesota triggered intruder alarms at all airbases in the area. Unfortunately at Volk Field Wisconsin the alarm was wrongly wired, causing the klaxon ordering out nuclear-armed F-106s to sound. Pilots knew there would be no drills in the current situation so immediately prepared for take off. A staff member had to drive out to the runway to prevent the aircraft from taking off.