In the past that maybe there is secret cia drone program they were working on. maybe we were working on hyper sonic weaponry. we have a lot of secret types of defense systems, offense technology and the entire -- our entire stealth system, for instance, was kept secret for a long time, the b-2 bomber. so a lot of this, the assumption was this could have been some other government technology. >> right. >> we know now that that's not the case. that's actually a significant thing that we have learned from that. but that then narrows somewhat the focus on what actually this could be. and there is ...