Bradford James Gille, 42, faces terrorism charges after the mass stabbing incident at a Traverse City-area Walmart.

Matthew Kolakowski was shopping with his daughter at a Michigan Walmart when he heard screams and saw a man with a knife.

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

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

Derrick Perry speaks with ABC News on Good Morning America./ABC News(TRAVESE CITY, Mich.) -- A former Marine who helped ...