Well, i totally believe that our government did this but there are many people who don't. I would like to see your proof.I dont have enough time to say all the facts i know but i will try to tell the ones that i think are the best at showing the conspiricy . I think everyone knows what a put option is."Over three days before terrorists flattened the World Trade Center and damaged the Pentagon, there was more than 25 times the previous daily average trading in a Morgan Stanley "put" option that makes money when shares fall below $45. Trading in similar AMR and UAL put options, which make money when their stocks fall below $30 apiece, surged to as much as 285 times the average trading up to that time.When the market reopened after the attack, United Airlines stock fell 42 percent from $30.82 to $17.50 per share, and American Airlines stock fell 39 percent, from $29.70 to $18.00 per share" Why would they do this a couple days before 9/11? Also what are the engines on a 757 made out of? well we don't know specificly but we do know they are made out of titanium. Titanium's melting point is 1668 Â°C.High grade jet fuel burns at a maximum of 1,000oC. So it is impossiable for gas to burn the engine so it is not visable anymore. This is a diffuser case on a 757 looks like this http://www.tomflocco.com/fsimage/karlschwarz/DiffuserCaseIpb757.jpg. However the diffuser case found at the Pentagon didn't look like that at all.