One of the men who authorities say helped take down a suspect who stabbed eleven people at a Walmart told NBC News about how he sprung into action. Marine veteran Matthew Kolakowski says he took off running after the suspect and rammed him with a grocery cart to prevent him from hurting more people.

A Walmart employee was helping a customer check out when she heard a warning that someone in the store had a knife.

Cindi John of Treaty Fish Company is recovering from injuries sustained in the July 26 attack that led to terrorism charges against the suspect.

"I'm still sitting and grappling with the weight of realizing that it was kind of a life-or-death moment," said Julia Martell, who witnessed the stabbing, which wounded 11 people.