According to a Facebook post, a man in Las Vegas interrupted a burglary when he saw four men attempting to break into his neighbor's house.
Homeowner Joseph Mueller called his neighbor, Air Force veteran Brett McCann, after getting an alert on his phone that his house alarm had gone off.
The quick-thinking McCann grabbed his gun and his phone, crossing the street to confront the men, who quickly made their escape.
The driver of the car the men are seen jumping into claims it is his "homeboy's" house, but McCann rejects that claim.
The video already has more than 2 million views on Facebook.