released body cam footage of the fatal shootage, the disturbing video shows a car chase, a muzzle nash from walker s car. the foot chase from cars stopped and accidence of shots fired by police which killed walker. cnn s paolo sandeval joins me now. you were at the akron news conference when the video was released. break down this disturbing video for us. . reporter: so what this does, ripe, it essentially shows you the moments leading up to and during the shooting. we will play portions in a few moments. it is extremely upsetting. it is extremely disturbing. but law enforcement we leasing that just five days after that monday shooting, hoping that it would be adding for context to what took place here. before we roll that footage, it s important to roll out what police say initially was perceived to be a threat, which is when they tried to pull over walker, police saying that during that vehicle pursuit, they not only heard what sounded to be like gun fire but also from t
absolutely. reporter: the crossing in missouri was identified by the state as needing improvements. the cost at $400,000. maybe the price of fixing this is the cost of lives. you know? you can t put a dollar amount on that. that s what s sad. reporter: mike cesays he hop it leads to nationwide change. i wish it hadn t come to this. a chinese formula 1 driver is crediting safety innovations in the car today in england. just after the start the driver s car flipped over after contact with another car. the car slid upside down across the track, eventually flipping over a large tire barrier. he is okay.