imagine a lot of resources going. there will put the video back up on the screen, another thing i wanted to ask you joyce, a more basic policing level is, you've worked with law enforcement on, a lot of probes. but other era would you have a video like this of the suspect but they would be in a mask and that would've been suspicious? if the guy hadn't had the mask, and i'm sure that they would be much further along on the identification. >> this is something that we talk about a lot, as academics teaching criminal law. how much more difficult it is to identify people in an environment where everyone is wearing a mask. but the reality is that the fbi will have capacity to enhanced this video and ensure that that has already been done. and we will perhaps be able to pick up on items of clothing or other indication of identity that they will be able to use. so this is really important that people in the public look at this video carefully to see