I'd argue one point - prior to 9/11 there were numerous incursions into the cockpit by unruly passengers. Airlines fought every effort to require stronger cockpit doors. Had they been in place on 9/11 the WTC would still be standing.
Biographical Information Commission Members Thomas H. Kean Chair Lee H. Hamilton Vice Chair Richard Ben-Veniste Fred F. Fielding Jamie S. Gorelick Slade Gorton Bob Kerrey John F. Lehman Timothy J. Roemer James R. Thompson
Some of these names should ring a bell.