forces. the u.s. has commandos. they know how to do this sort of thing, but it's the kind of thing they have to get to very quickly. raqqa in syria where this is happening is a strong hold of isis. they probably likely now have this man surrounded by security in a very tight location, perhaps in the city or in a compound. so even if they know where he is, it's going to be very difficult to get to him any time soon. dana? >> barbara star at the pentago., >> congressman joins me live in the studio. thanks for coming in. what do you know and what is the latest information about why this plane went down? >> well, from what we understand, the sophisticated system that would be necessary to take down an f-16 like this is not something that isis has its hands on, and so it's a little bit of a mystery. whether it's a malfunction or what came to pass here. >> what about what i asked