"All of a sudden, we started getting bells and whistles going off. As we looked at the display board in front of us, sure enough, the missiles began going into an unlaunchable, or no-go, mode. They couldn't be launched -- it went from green to red.We also had a couple of security violations, meaning there were lights indicating some kind of intrusion at the missile sites, where the missiles were actually located, about a mile or two away from the launch control facility.Salas said they immediately performed a system checklist to see what was wrong and to determine how it was possible that 10 nuclear missiles could suddenly be deactivated."
