A Fort Hood soldier risks his life to save a fellow soldier, and in this case, it wasn't in a war zone, but in a traffic zone.

It happened on TJ Mills, just outside of Fort Hood's main gate on November 14, around 10 a.m.

That's when an apparent seizure caused SPC Christopher Sweeney to lose control of his car in traffic.

"As he started going to this lane in front of me is when my wife was like, 'He's having a seizure,'" explains SSG Mark Walls, as he drives up the place where the accident happened.

Without a second thought, he threw himself in harm's way, using his own vehicle, a large Hummer, to stop Sweeney's car.

"I didn't want him to go into traffic," says Walls.

Now two weeks later, the two soldiers meet for the first time.

"Hey, sergeant, nice to meet you. Thank you for everything," Sweeney says to Walls, as they shake hands and hug.

After exchanging greetings, they exchange accounts of that frightening morning

"I prayed asked God to make sure you were ok," Walls tells Sweeney.

And Sweeney told him, "If it wasn't for you, it would have been a lot worse."

All he remembers is leaving Fort Hood's gates on his way to Central Texas College and waking up in an ambulance.

"They told me there was a staff sergeant that basically got in front of your car and stopped me, and to be honest with you, I got a little bit emotional about that, because I couldn't believe that someone would actually do that," said Sweeney, as the two continued to talk.

But Walls says he only did what any soldier would do and what he would want others to do for him.

He said, "I know that in America, anybody would have done the same thing. I have to have that hope."

Now each time Walls gets behind the wheel, he says he can't help but be reminded of what happened, and what might be down the road.

"You have to think about stuff once you go through it. It sticks with you for a little bit," he said.

So it's back to business with the 3rd Cavalry Regiment, appropriately nicknamed "The Brave Rifles."

SGT Walls received an Army Commendation Medal and a Certificate of Appreciation for his courage that day.