It is very sad.
This is what Moussaoui did:
He was in jail on a visa violation in August 2001. He knew of the upcoming attacks.
In fact, he had taken flight lessons to take part in them. He told no one what was coming.
He lied to the FBI so the attacks could go forward.
He pled guilty last year to conspiring with al Qaeda; at his trial he bragged to the court that he had intended to be on the fifth aircraft, which was supposed to destroy the White House.
He knew the trigger was about to be pulled. He knew innocent people had been targeted, and were about to meet gruesome, unjust deaths.
He could have stopped it. He did nothing.
And so 2,700 people died.
.....Peggy Noonan