Xdamousex, big problem here.  With ValuJet Flight 592, they recovered 75% of the plane and started reconstruction to determine possible causes. With Flight 93, this was impossible because there was no recognizable wreckage and no bodies. It's odd that twice in one day (Pentagon and Shanksville), two planes and the entire crew and passengers just dissapeared upon impact. Coincidence or is it time to wake up???