u.s. intelligence had to track him down and then get ready to move. >> you have to know where he lives, where he frequents, when he goes where, does he go with his family, does he have a security detail. all of these questions have to be factored in. and once you know the answer to that, then you develop your plan on how you're going to take him. >> reporter: the delta force commandos who got khatallah belonged to the joint special operations command, one of the most secretive organizations in the u.s. military. the same military command that got bowe bergdahl back a few weeks ago and also went after osama bin laden. barbara starr, cnn, the pentagon. >> joining me now are cnn national security analyst fran townsend and former ncis special agent in charge robert mcfadden, the senior vice president of the supon group. robert, khatallah is now aboard the uss new york being questioned, being interrogated. i know you have interrogated a lot of terror suspects. can you take us inside?