Video shows an armed bystander confronting a knife attacker who allegedly injured 11 people at a Walmart in Traverse City, ...

Nearly a dozen people were injured in the attack before citizens -- including Derrick Perry, who was armed with a gun -- ...

Perry pulled out his gun; it is legal to open carry in Michigan. "Unfortunately ... "We want to confirm that Derrick Perry, an off-duty Munson Healthcare employee, was part of the citizen apprehension ...

A Heroic Marine vet saved countless lives when he confronted a knife-wielding lunatic in the middle of a stabbing spree at a ...

Marine veterans Matthew Kolakowski and Derrick Perry helped stop a man accused of attacking 11 people near Traverse City, Michigan.

Derrick Perry says he is just like anyone else living in the Traverse City community, but he became nationally recognized after he stopped a man who stabbed 11 people at Walmart.

What began as a regular Saturday afternoon at a Walmart in Traverse City, Michigan, quickly descended into chaos ... one man’s courageous actions helped prevent further bloodshed. Derrick Perry, a ...

A civilian responsible for detaining a stabbing suspect at a Michigan Walmart on Saturday was identified and hailed a “hero” on social media. Derrick Perry, a Marine veteran who was captured in ...

Perry, shown in the video wearing a white T-shirt and khaki shorts, dropped his groceries and, along with others, surrounded Gille. Perry pulled out his gun; it is legal to open carry in Michigan.

But it was Derrick Perry, a Marine veteran, who confronted the attacker in the parking lot, firearm in hand, shouting “Drop the knife!” along with other bystanders.

Perry is a Marine veteran, the New York Post reported, citing his family. "What they did was amazing," Grand Traverse County Sheriff Michael Shea told reporters during a media briefing on Sunday.