The (executive privledege review) transcripts may also shed light on the military's repsonse to President Bush's unprecedented order to shoot down any hijacked civilian airplane. Pentagon sources say Bush communicated the order to Vice President Dick Cheney almost immediately after Flight 77 hit the Pentagon and the Federal Aviation Administration, for the first time ever, ordered all domestic flights grounded.'There are unanswered questions,' said Richard Ben-Veniste, a comission member and former federal prosecutor, as to whether the shoot down order had been rehearsed for, whether it had been prepared for, and what measures were in place to protect the Capitol,'...