On one radical website, a writer invites fellow members to post information on how to bypass airport screening.
Another member asks about explosive detection devices, writing: "We have that system in place in Algiers...does anyone know if it's capable of detecting [the flammable gas] butane?"
On another Jihadist site, a visitor questions security involving 3D scanners at British airports asking: "Can I refuse [to pass through] for religious reasons?"
Before long comes this answer: "…advise those who wish to avoid the Heathrow scanners to take the train to Paris... and then board a plane from there."
Perhaps most disturbing -- the recent discovery of a confidential TSA document on a Yemeni Web site discussing the rules for searching passengers.