Passenger aboard United Airlines Flight 93 who told his wife that he was going to help overthrow the 9/11 hijackers.
He was flying for business as the COO of a California-based maker of medical devices.
He made four phone calls to his wife: first telling her the plane was hijacked, then telling her the hijackers were on a suicide mission, then calling to say there was a plan, and the last phone call to say goodbye.
He had four daughters with his wife Deena Burnett.
Daniel M. Lewin, an executive of the Akamai technology firm, was also one of the plane crash victims though on another flight on 9/11.