http : //911review.com/errors/pentagon/nodebris.html [ 177 ] another discussion on the lack of verifiable evidence that a plane hit the pentagon and advances a drone theory http : //www.odeion.org/cruisemissile/ [ 178 ] transcripts of the fire fighters radio transmissions can be found here : http : //911research.wtc7.net/mirrors/guardian2/wtc/firefighters.htm [ 179 ] video of molten metal falling from south tower : http : //www.youtube.com/watch ? v=gpu9iqbfmiw [ 180 ] the value of the gold and silver within wtc vaults has been estimated at between $ 200- $ 650 million .