 FACT: When flying if radio contact is lost the pilots would fly to  their last clearance point. If they were cleared to the airport  destination that would be where they would fly to, if it was only an  "intersection" in the sky that would be the point and they would  circle until their "expect further clearance time". They would NOT  make any unspecified turns or descents that Air Traffic Control  doesnt know about for the simple fact that they (the pilots) dont  know where the other planes are in relation to their planes.  Therefore when asked what the pilots would be doing if he wasnt  there holding a gun they should have replied we would be flying onto  Washington D.C.