In my opinion he didn't fake his own death... they killed him because he would of been one of the first people to call bullshit on the whole official story... just 3 months prior to the event he was the head of counter-terrorism for the FBI and it would of been very hard for the MSM and TPTB to simply ignore this man and what he would of been saying... He would of been a serious issue to the overall War of Terror branding campaign being pushed on the public at the time, and because of that they simply created a situation to resolve this possible issue by simply creating a situation where he would be inside one of the buildings that would be attacked, so that by successfully pulling off the attack, they also remove one of the biggest possible whistleblowers before he even gets a chance to speak.