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

Of the 11 people who were attacked, six remained in fair condition as of late Tuesday morning, while one was listed in good condition.

In an ABC News exclusive, Derrick Perry recounts his confrontation and pulling his gun on the man accused of stabbing 11 people at a Michigan Walmart.

GRAND TRAVERSE COUNTY, MI -- The victims in Saturday’s stabbing attack at a Walmart in the Traverse City area are all progressing. According to an update issued Tuesday morning by Munson Healthcare, all 11 victims are in fair condition or better.

Bradford Gille was arraigned on multiple charges, including assault with intent to murder and terrorism. Magistrate called allegations "heinous."

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

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

"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.