Filmmaker Omer Fast was looking to talk to US drone pilots in order to shed light on the highly-controversial practice of remote-controlled killings taking place in the Middle East and Asia. But the Israel-born, Berlin-based artist was stopped dead in his tracks when his producer got a call from the FBI after posting an anonymous ad on Craigslist.

Last week, in an interview with Photoworks magazine, Fast claimed that he and his team were "told to stop what we were doing and threatened in suggestive, spy-movie language" while doing research for his short film, 5,000 Feet Is The Best. Fast's Craigslist ad sought contacts from Creech Air Force Base, a major drone operations center just outside Las Vegas, Nevada.

"It sure took us by surprise because they had to trace our phone number via the IP address."

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