A man allegedly strapped a rifle over his military style body armor and pushed a shopping cart around a Walmart store Thursday in Springfield, Missouri.
CBS News reports that the store manager pulled the fire alarm and panicked shoppers fled.
The gunman allegedly shot video on his cell phone as chaos ensued.
An off-duty firefighter with a gun then confronted the man and held him until police arrived minutes later.
Police Lt. Mike Lucas said the suspect is "lucky to be alive." He added, that the man's intent was "not to cause peace or comfort... his intent obviously was to cause chaos."
