Emergency doors slow to open at Walmart, some said after their escape

THORNTON, Colo. -- Some of the people who rushed out of the Walmart store in Thornton after they heard gunfire on Wednesday night said the emergency exits were locked, at least initially.

But the Thornton fire marshal said the fire exits are inspected every year and there was no evidence the doors were locked from the inside.

A spokesman for the National Fire Protection Association said many larger stores use what are called delayed egress, locking doors that can take up to 30 seconds to open.

All of the people said the doors eventually opened.