video: Sea-Tac TSA staff call a BDO, then the police, because I took some photos

This isn't all that exciting, but I went down to Sea-Tac this evening to survey their use of TSA's naked body scanners (the electronic strip search machines). At checkpoints #1 - #3, the body scanners are in place, but they were not being used at #1 and #2. My view into #4 was obscured, so I couldn't tell what was going on in there. The TSA staff got all worked up, called in one of their mind readers to talk to me, then brought the police over. The cops refused to answer my question about photography, so I left. They followed me the quarter-mile back to the train station, then stood around until I left.video: http://www.youtube.com/watch?v=Q9SEv3sN6oU After I took a few photos of TSA barricades #1 and #2 (toward the south), told a security guard that I didn't want to talk to him, and took some of #3, another TSA security guard approached, then humorously (to me; he was serious) raised his arm as if to block my view of the area where about 50 people were standing and being searched. I walked over to #4, took a couple pictures, then started taking video and caught the hand-waving guy ask a coworker if there was a "behavior detection officer" on duty. I didn't hear her response. He told me that my photography was a problem, but he refused to tell me if there was any law barring photography in public areas of the airport (there is not). A third security guard arrived, presumably the "BDO". She told me my photography was "kind of weird". I put away the camera about the time that two police officers arrived. They asked about my photography. One of them said that there are "certain things at the checkpoint that [we're] not allowed to take pictures of". I asked him what things those were. He said, "first, let's figure out who you are and why you're taking pictures". I asked if I was being detained. He said "no". I said, "Okay, thanks," and walked away. The two of them followed me back to the train station , where I stopped to chat with an acquaintance who works at the station before going home.This is ridiculous. I'll be there Wednesday with to hand out leaflets with Rachel Hawkridge, chairwoman of the Washington State Libertarian Party , and will probably take some more photos. SEA was one of the airports that never responded when I took the advice of Curtis "Blogger Bob" Burns at the TSA blog and contacted 50 U.S. airports to find out about their photography policies last year. I resubmitted my question to them via " Got Feedback? " (which seems to be called "Talking to TSA" now) a few days ago, but have not received a response.I'd appreciate any suggestions for how I can get somebody from the airport on record saying that there's no prohibition on photography of the public areas of the airport in the next three days.