Having recently been involved in a very realistic airborne "hijack exercise" for a European Airforce, if i'm ever in a situation like that for real I'm going to do exactly what i'm told by whoever assumes control of the situation (be it the authorities on the ground or an airborne interceptor) I will go exactly where i'm ordered to and once i get there i'll do exactly what i'm told. In a hijack or bomb threat situation the crew at the sharp end may not be in possession of all the relevant facts.