Security Guard’s name is Fatih Aydogan and he trains in Checkmat Wimbledon academy in London, Uk. After this incident he said:
“I was on my duty drunk man came to me and try to punch me, but he couldn’t because BJJ works. I would like to thanks to my BJJ coach Carl Fisher and Checkmat family.”
In this video, we can see the security guard being attacked by a drunk man trying to punch him for the first time and then leaving. After that drunk man got back but Jiu-Jitsu guy was ready to take him down as he did. He executed double leg takedown and controlled the attacker probably long enough before police showed up as he was calling for back up a few moments before he was attacked again.