the evidence and they have -- clearly they have a case. but bringing it beyond just one person is probably on the mind of the law enforcement investigators who were there right now. ashley: and then you and i spoke about 30 minutes ago oar so and right there at the end i didn't have a chance to ask you about this. we briefly mention it that local reporters we hearing loud boom and flash bang and told to hit the ground is that something that signifying a hostage situation like this is over? >> well no, if you -- close distraction devices they are loud and produce a tremendous amount of sound. of a bright light and it is a visceral feeling necks to them when they go off you really feel them. so the way they're used is they're deployed because -- once they go off, whoever is in the vicinity is so stunned by the senses beth hearing and visual of the flash. they're really paralyzed for a