Four teenagers in Houston learned a very difficult lesson Friday night after they attempted to rob a man sitting outside his garage. That man, it turned out, was a retired Marine.

What happened?

Around 10:30 p.m. Friday night, four teenage males walked up to Alexander Borrego's house, pulled out a gun and tried to rob him. Borrego told KPRC-TV that one of the teenagers stuck the gun to his head. However, little did they know, Borrego was both a Marine and armed with a pistol.

"One came alongside, through here, and next thing I knew I had a gun to the back of my head," Borrego said. "They told me to get up, so, I stood up. My garage door was open so, my main concern was my family at that point."

Borrego said his military training kicked in when the gun was placed against his head. He said he swiped the gun away and began firing at the boy with the gun, shooting him in the torso and leg.

After Borrego began firing in self-defense, the boys scattered and ran to the home of the teenager who was shot. That boy's mom took him to the hospital, where he is in serious condition. However, the boy is expected to survive.

What did Borrego say about the incident?

Borrego appeared very pensive in his interview with KPRC and was very uncomfortable with what he had to do. Still, he said he did what he needed to do to protect his family.

"I don't have hate for them," Borrego said. "It's sad, but hey, I had my pistol — I thank God for that."

According to KPRC, Borrego's wife took to social media to thank God and praise her husband after the incident.

"You hear about stuff like this all the time, but never think it would happen to you. This could have ended terrible for my family and I, but I think God, everyone watching over us and Alexander Borrego for stopping them from coming inside. I am so proud of you babe. #MyHero," she reportedly said.

Will Borrego face any charges?

According to KPRC, he will not.