floppy disks on joe snodgrass's desk, which investigators thought might hold evidence of his complicity with his wife's murder plot. but before they checked the disks, investigators wanted to make sure that they actually belonged to joe snodgrass and weren't someone else's. so, they asked him to come to the investigation room to identify them. >> joe snodgrass was in an investigative posture. joe snodgrass was a law enforcement official. so, if someone is investigating, well, naturally, you try to cooperate, you try to help. >> joe snodgrass pulled out a pair of scissors and shredded them. >> they tried to get the scissors away from him. but there are pieces of this disk on the floor.