Are terrorists "casing" planes?

If that headline isn't enough to scare you off, go ahead and read this story from e-Turbo News. One quick snippet:

Security experts continue to be concerned that terrorists are monitoring and probing the nation's aviation system in order to uncover vulnerabilities and prepare for another attack.

As often as twice a week, major airlines receive reports of suspicious behavior, according to industry sources - things like passengers videotaping the cockpit area, spending excessive amounts of time in the lavatory, or suddenly rushing to the front of the plane and then backing off.

Despite rising concern about security, however, pilots and other industry sources say there is still is no single and standardized system for airline employees to report such suspicious behavior directly to government investigators.

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