...“It was a mistake made during a standard procedure at the changeover of a shift, and an employee pushed the wrong button.”
I've seen some shitty Admin Panels, but somebody "pushed the wrong button" and an end-of-your-world false alarm was going off for 40 minutes?! WTF?
Ya, it's the same panel that is installed in the White House. :) Now that's a comforting thought.
I could see retracting quickly leading to even more confusion as you then have a mix of people who have received (and believed the retraction) trying to resume normal activity and people who still thinking they have to get to a safer place right away. I could see this leading to some escalating tension and even violence.
It might be better to wait until a good majority of people have reached their shelters and stopped moving before you issue the retraction.
..that's not what I asked. The EAS, EBS, DEAS, etc. they've all had issues with false alarms and operator error before. What kind of provisions and procedures for case like this do you think have been made?