Well, it may not be the most likley thing to happen, but it could. Was it not 3 years ago we were threatened to be without power for up to 6 months? Has it been 3 years since we were threatened with planes falling from the sky, riots worldwide, looting, and every other secret wish of some of the more 'hard core' survivalists? Forget not Y2K!
A gun would certainly be useful for that kind of situation. Criminals are lazy, they go the path of least resistance, otherwise, they would have a job!
But, a rifle? No. The bullet would go to far in a city. This is shotgun territory, my friend. You don't even have to blazon it, just kinda keep it in sight.
What did you mean by 'nothing worked'?
The longest I have been without power is a day, which wouldn't have been bad at all, if we didn't cows to milk.
Now, we have a generator.