Unfortunately a lot of it is also from some paranoid harpy bitch Mrs. Jacobsen.
http://www.snopes.com/politics/crime/skyterror.asphttp://www.salon.com/tech/col/smith/2004/07/21/askthepilot95/index_np.htmlhttp://www.nationalreview.com/comment/taylor200407211921.aspHer original story being on
http://www.womenswallstreet.com/Basically she has some ranting and raving story about a middle-eastern band that give each other super sekret covert arab signs such as "thumbs-up" to one another. Then throws in a few actual incidents in an attempt to validate her own lunacy.
