Harris, at the west entrance, immediately turned and fired ten shots from his carbine at Gardner, who was away. As Harris reloaded his carbine, Gardner leaned over the top of his car and fired four rounds at Harris from his service pistol. Harris ducked back behind the building, and Gardner momentarily believed that he had hit him. Harris then reemerged and fired at least four more rounds at Gardner (which missed and struck two parked cars), before retreating into the building. No one was hit during the exchange of gunfire. Gardner reported on his police radio, "Shots in the building. I need someone in the south lot with me."