Are terrorists doing 9/11-style dry runs on U.S. flights?

A leaked pilots union memo details a frightening incident on board a recent flight from Washington, D.C.

Reagan Airport
(Image credit: (Brendan Hoffman/Getty Images))

"If a dry run is occurring, the attack will shortly follow."

That's according to Wolf Koch, a Boeing 767 pilot for Delta Airlines and an official at the Air Line Pilots Association International, who was discussing common terrorist tactics in the run-up to devastating attacks like those on 9/11. That is an extremely worrying thought given a memo leaked this week from the U.S. Airline Pilots Association, which warns of "several cases recently…of what appear to be probes, or dry runs" of such attacks.

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Frances Weaver is a senior editor at The Week magazine. Originally from the U.K., she has written for the Daily Telegraph, The Spectator and Standpoint magazine.