abdelhamid abaqoud. there were threats to public transportation and schools. >> in terms of michael, where this guy might be, i mean, i guess the networks in belgium themselves are pretty extensive of former fighters he could be potentially hiding. >> not even that. so depending on who you ask, maybe 150 0 or maybe more than that receive some measure of training and come back. forget about them for a second. what about the islam or jihad travelers, people that may have been recruited by returning jihads in europe. >> who may not be on the radar. >> completely. whole city haves given themselves over and become in a sense out of middle east, right? some of the more scuffling areas of beirut or baghdad. it's not that difficult. again, the belgiums shut down the entire city going house to house and we don't know what they really got up to during that 72-hour period. i'm sure they are casting as wide a net as possible and he