i was in the basement of a largish building. our office was down there, and we'd got used to the hum of all the internals at the other end of the building (hva

i was in the basement of a largish building. our office was down there, and we'd got used to the hum of all the internals at the other end of the building (hvac mostly, but...other ambient power noises in general). 4ish pm (ann arbor area)... boom. no power. pitch black. in a basement. with no sounds. no ambient hum of the hvac. nothing, save a single red 'exit' emergency light. we made our way upstairs and outside, and ... yep - the whole town was shut down. took a while to realize it was a good portion of the northeast! looking back, I was quite surprised no one was caught in an elevator. there were only 4 floors, and it was 4pm, so things were slow, but... they did get used regularly.