So imagine 31-year old Luis Rosales' surprise when he held up a Comfort Inn in Los Angeles, only to run into a pair of trained mixed martial arts fighters.
Brent Alvarez and Billy Denney were walking through the hotel's lobby when they ran into the robber. That's when they took him down, got the loaded gun away from him, and held him down with a rear naked choke until the police arrived.
That's pretty much textbook Good Samaritan right there. Check out the video evidence below.