On the Los Angeles metro, this shirtless tattooed thug was trying to intimidate passengers on the train, luckily fitness trainer Adrian Kaczmarek was there to save the day. He snuck up behind the criminal and slapped on a perfect rear naked choke rendering the hooligan unconscious.
‘I finally saw it escalating to the point where he was getting physical and people are getting pushed around. The whole thing is about to explode. I thought the best thing to do was go over there and subdue him.” He told NBC news.
Here is a screenshot of Adrian Kaczmarek doing a youtube presentation on fitness.