Authorities say a man wielding a folding knife randomly stabbed 11 people near a checkout counter at a Walmart in Traverse City, Michigan.

Two Marine veterans played a key role in stopping a man who allegedly stabbed multiple victims in a Michigan Walmart. Matthew Kolakwoski had just left a checkout lane when he heard a worker scream that a man had a knife. He then heard a “mass of blood-curling screams from the back of the store,” mlive.com reported.