A close "real world" one that happened at a lot of office - the 2003 (I think that was the year) blackout

In HYC, where something like 1 MILLION people get in by mass transit, there was no way to get home - aka "you're stuck at the office"

I know the crew where I work headed for the server room, where the UPS/generators kept things cool, and there was plenty of water

I'm not 100% sure what they did RE food