reporting. >> reporter: i think, kate, the big worry is that isis-k had this capability. they have the motivation and it is their moat modus on ranty. they are used to carrying out attacks on civilian targets. they've attacked courts and religious ceremonies and carry out complex attacks as nick and peter have said. i recall one where they waited until the media rushed to one particular suicide bombing and then send a second suicide bomber in. -- undercover to afghanistan. bringing all of the skills that they'd acquired in iraq with them. and when they arrived in afghanistan, they set up in the mountains, nangarhar and kunar but they were devastated by the