A viral video shows a military veteran unleashing a world of hurt on a knife-wielding man who was threatening shoppers and employees at a South Carolina Walmart.

Last Wednesday, an unstable man was threatening shoppers inside a Walmart store in Columbia. Customers were taken aback by a man brandishing a knife and yelling at everyone in the store. One woman recorded video of the unnerving incident.

An individual calmly approached the troubled individual in an attempt to quash the potentially dangerous situation. The unhinged person screamed at the peacemaker and began swinging the pocket knife around. The man attempted to snatch the knife from the hostile individual, but failed to take away the weapon. This angered the man even more so, and he swiped the knife at the other man's face.

Demario Davis was shopping at the Walmart with his son when he heard the commotion.

"I was at the checkout when my son noticed the guy walk in with the knife open," Davis said, according to the New York Post. "He then proceeded to the service desk waving the knife at a few female employees."

The man allegedly screamed, "When the cops get here, I’m going to start cutting you all up."

"As I'm walking towards the area where the gentleman waving the knife is terrorizing other customers and employees," Davis said he saw the armed man attempt to cut the other man, prompting home to spring into action.

Davis told Fox News, "Another customer tried to subdue the gentleman waving the knife, but the guy tried to cut him in the face. That's when my military training kicked in, and I casually walked over to the object not only to take him down but also protect myself in case I failed, but with my great military training, I was able to neutralize the threat until law enforcement arrived."

Davis grabbed a stanchion, swung the weighted pole over his head, and bludgeoned the knife-wielding man in the back. The ferocious comeuppance caused the man to crash to the ground and drop the weapon. Another customer rushed over to confiscate the knife. Customers held the man on the ground until police arrived at the crime scene.

Video shows the suspect on the ground as he was being arrested by two deputies from the Richland County Sheriff’s Department. The man attempted to resist arrest, but officers quickly handcuffed the suspect.

The Richland County Sheriff’s Department said the man was taken to a hospital for evaluation.

A woman is heard on the video saying that the man threatened to stab people because he wanted $20.

Davis explained, "My first instinct was to neutralize the situation, so I just casually walked over and waited until I had an opportunity to get him, and I got 'em, I guess."

He added, "I'm a community person, so if I see something in the community that’s not right, with all the violence and things and attacks going on, gun violence, you know, you want your people in the community to step up as well."

Davis said sometimes citizens have to become vigilantes because "the cops can't do it all by themselves."

Davis revealed, "I have received so many heartfelt comments and compliments from civilians and veterans all over for my brave act and quick response."

CAUTION: Graphic video

WATCH: Veteran takes down knife-wielding man in South Carolina Walmart | New York Post www.youtube.com

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