(CNN) Army Pfc. Glendon Oakley was shopping for a jersey Saturday when a child came into the El Paso, Texas, store and said there was a shooter at the nearby Walmart.

Oakley told CNN no one in the store, including him, paid attention because they didn't understand what the child was talking about. Oakley said he then walked to another store.

That's when things went wrong.

"I just heard two gunshots and a whole bunch of people started running around and screaming," Oakley said.

As mayhem erupted over the next five to seven minutes, the armed Oakley planned to go with others who ran out of the store toward the gunshots.

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