[Tilt]

Assuming you are pretty close to the person and that they have a little Arab or Muslim blood in their background, you could do the following. It would probably have to be a roomate or something to make this all work. Also most ideal if your victim is a foreign national.

1) Use his computer to surf websites that would make him appear sympathetic to Al Qaeda. Post inflammatory political statements from his computer to various websites. Also visit websites that explain bomb making, that discuss the vulnerabilities of nuclear facilities, that have subway or other infrastructure plans, etc.

2) Send his resume to apply for jobs at nuclear facilities, port authorities, perhaps immigration jobs, anything suspicious.

3) Before he is scheduled to fly somewhere, sprinkle gunpowder lightly on his shoes and his bags. Sew a small pocket Koran and knife into the lining of his bag. Fold a tattered page of paper that vaguely and incompletely describes plans that involve the location of other participants and a bomb. If you could get this into arabic that would be ideal.

4) Before he leaves for the airport, call the FBI terrorist hotline. Tell them you suspect he is planning on bringing the plane down, but that they should be really careful since he is carrying concealed weapons and is trained in martial arts.

5) Next call the press. Make yourself available for interviews, when he gets picked up tell the press how much time he spent last summer in Kazakhstan (or someplace similar) and how he has never been the same since, with weird friends, etc.

I am sure others can improve on the details. I think something like this would be tough to recover from. There is a chance he might just get shot, and there will be enough going on that he will be in for a real investigation.