>> you can hear the crunching sound of car after car hitting each other. that's how a horrible crash is being described in florida and the human toll heartbreaking. taking the lives of at least ten people. it happened along a stretch of interstate 75 near gainsville. we are told the visibility at the time was zero. there was a brush fire leaving drivers virtually blind. the crash closed down both sides of i-75 with wreckage spread out over an entire mile. joining us by phone from gainsville florida, florida highway patrol ltd. patrick. are you with us. >> i am. >> i understand when responders got there they could only hear screams because they couldn't see anything through the haze. >> i wasn't there initially, but it was definitely -- the conditions were very murky. the fog, there was a fixture of fog and smoke from that marsh fire that made visibility bad, real bad. >> you know, we wanted to talk