William Doyle’s family is one of the families determined to find those who funded the attacks on 9/11. Doyle’s son, Joseph, was killed in the north tower of the World Trade Center. Doyle said there are “concrete facts” showing the majority of the hijackers’ funding originated from Saudi Arabia. He said the government helped “shield” some of that evidence when the joint congressional committee investigating the attacks published a report in December 2002 and redacted about 28 pages. Doyle and others believe names of Saudi financiers and companies have been removed.