For those who interested in the art of self-defense, you should be checking out Active Self Protection, who goes by ASP. Their daily videos go through various real-life scenarios often from captured surveillance video. The crew over there go through the details on how good guys deal with bad guys “when the balloon goes up.”
ASP also runs an excellent Facebook page, looking at the various articles often by trainers. One of their latest referrals looks at one officer’s experience of the weapons that “bad guys” carry and the results are surprising.