posited this theory may might be able to transfer from the passenger wi-fi networks or satellite networks into the avionic networks that control navigation. and so what they did was then they admitted this to the fbi or chris admitted it to the fbi that at least on 15 to 20 occasions while he was on a plane, he tapped his laptop into the passenger entertainment system and there's a network box underneath the seats in certain planes -- >> right. >> -- in which he could do that. then he was able to then jump from that entertainment network to the avionics network. >> it's interesting because boeing has come out -- because he said he's done this on both boeing and airbus planes and boeing said look their entertainment system is quote, isolated from flight and navigation systems. so they're saying essentially you wouldn't be able to control the plane this way. do you believe that he was able to control the plane? >> well i'm not sure that i completely follow airbus -- or either boeing or airbus' statements. when i spoke with boeing back in