then he kills 31-year-old worker dennis sargent. in the panic, a few people are able to escape the store. zack is working in the back when he hears those shots. >> i looked down the aisle. i saw chuck lios on the ground just covered in blood. it still didn't click in my head that something was wrong. i started walking backwards and i found myself in the produce department. >> this is the view from the store camera covering the produce section. >> the floor crew guy that waxes the floors, he just runs right past me, and i knew something was wrong then. and i kept walking backwards. i was going to go towards the back room. >> but zack had just made the biggest mistake of his life. zane floyd is coming around the corner with a shotgun. >> there's tables in produce that have all the fruits and vegetables. and i dove between one of those, just trying to get down. and he takes a shot at me. and i'm ducking under the table. and it goes over my head. he's chasing me around, and i'm just scrambling, trying to get away. and he just comes right over me and shoots me.