To talk. >> none of the officers describe using any force against mr. gray. >> witnesses say they saw something rougher. >> they flipped him over and put both knees on his back and held him there until the cruiser came to pick him up. >> later when gray was taken out of the van, less an an hour after he got in he couldn't breathe or talk. he lapse into a coma and died a week later of a severe spinal cord injury. the critical questions remaining tonight, what caused his injury and what happened inside the police van. police say gray asked for an inhaler about the same time he got in the van at ...