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

GRAND RAPIDS, MI - Matthew Kolakowski had just left the Walmart checkout lane when a worker screamed that a man had a knife.

One of the men who authorities say helped take down a suspect who stabbed eleven people at a Walmart told NBC News about how ...

Two brothers who took action during the Saturday Traverse City Walmart stabbing that injured 11 people sat down for interviews in Grand Rapids Tuesday.

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

Matthew Kolakowski, a disabled veteran, says he and other shoppers managed to restrain the man accused of stabbing 11 people at a Walmart in Michigan.

Matthew Kolakowski was shopping for fishing gear and snacks with his daughter at the Traverse City Walmart over the weekend ...

Walmart in Traverse City Saturday, July 26th. One of the bystanders, Matthew Kolakowski, is from Kent County. He helped to ...

The actions some shoppers drew praise from authorities. Overnight, the strangers became online celebrities for their heroics as a video showing the confrontation spread swiftly on social media.

Matthew Kolakowski, a disabled veteran, says he and other shoppers managed to restrain the man accused of stabbing 11 people ...

A man was arrested and is facing multiple charges for allegedly stabbing 11 people at a Walmart in Traverse City on Saturday.

A Kent County man who helped stop the attacker who authorities say stabbed 11 people at Traverse City-area Walmart said looking in the man's eyes, it was clear something was wrong.