Yup. Have the problem when all the right people are awake and on-site to handle it.
I was in a building when someone inadvertently powered off the wrong equipment, which had been running for several years, and several of the power supplies failed to come back up. It was 1+1 redundant though, so we could quickly shuffle packs around to bring it back up without redundancy. Then, jogging through the building and asking if anyone had spares, we found a field tech in the lunchroom who had a pile of stuff in his van. Whole thing was back to 100% in less than an hour, and we let the beancounters sort out the field spares being used for office equipment.
If that same failure had happened during the overnight maintenance window (when volatile work was supposed to be performed), there certainly wouldn't have been the same resources around.
