Newsweek as a very in depth article on the events of September 11th called The Day That Changed America. An interesting part is Section XII - Conspiracy Theories. It's a in interview with Mohamed Atta's father:
The heavyset, bespectacled lawyer laid out his case in a bombastic voice with a slight undercurrent of desperation. "The Mossad kidnapped my son," he said. "He is the easiest person to kidnap. Very surrendering, no physical power. He is not a capitalist and does not have money for bodyguards. They used his name and identity. They forced him to make a phone call under threat after the attack to cause controversy," he said, referring to a call he claims to have received from his son the day after the attacks. "Then they killed him. This" -- the attack on the World Trade Center -- "was done by the Mossad, using American pilots."
While it's understandable for a father to deny their son is evil, contrast that with William McVeigh's attitude toward his son's actions. Adding this to the information posted below on EgyptAir 990 and you wonder if some of these people are capable of dealing with an objective truth.