Derrick Perry says he's no hero for helping subdue Bradford James Gille, who faces terrorism and assault charges for allegedly stabbing 11 people.

Derrick Perry, a United States Marine veteran, confronted a knife-wielding man in the parking lot of the Traverse City Walmart.

The video, which has spread on social media, shows Perry shouting, “ Drop it! Throw the knife now! " as he and other bystanders pin down the suspect. Police say the suspect, Gille, 42, had just stabbed five men and six women inside the store.

A stabbing rampage at a Walmart in Traverse City, Michigan, left 11 people injured, six critically. Amid the chaos, shopper Derrick Perry heroically intervened, tackling the suspect and preventing further violence.

The armed bystander who confronted the suspect in a mass stabbing at a Traverse City Walmart over the weekend spoke to Good Morning America.

Perry was captured on video confronting a Cheboygan man after he allegedly stabbed 11 people at a Walmart store in Garfield Township.