that they're now going to try to smuggle past airport security screeners. the war in syria is the focus of this latest threat. security forces believe militants there have been working with bombmakers in yemen who remain determined to attack western targets especiallily the u.s. the concern, hundreds of europeans and a handful of americans who have joined the extremists also hold person passports, that could give them easier access to u.s. bound planes. homeland security secretary jay johnson on rachel maddow's show yesterday. >> we're very concerned about it because there are stremtists within the border of syria that would like to indoctrinate syria. >> while the tsa sets a security standard, the u.s. is now asking airlines and those airports to ramp up their security, including more random passenger