. >> so chris let's just start out, who is abu ahmed katalla and? >> he is simply accused of orchestrating the attacks inon september 11th, 2012 on the u.s. diplomatic mission in which the intor was killed and in a secret cia base in which two cia contractors were skilled. >> i understand that building the case against him was very complicated. there was even an informant who was paid $7 million. can you talk to us a little bit about that? >> sure, this was an extraordinary difficult case to build against katalla, mainly because the fbi couldn't get into benghazi, they actually had to hand it off to military commandos who snuck into libya and debriefed the informant every four months. they started working will informant the end of 2012, it took a long time for him to get what he needed from ka tfertionalla before they were satisfied they could move forward with the prosecution. >> thompson: you attended several days of the trial. could you talk about what it was like? i understand some of the witnesses had to testify in disguise. >> yes, a couple of