The SSSS treatment is interesting. I've had it a few times over the years, but flew CO TATL a couple of times two years ago. Each time, when I went to check in, the agent had to call some special telephone number. One of the agents said "did you know your name is an a terrorist watch list?" She went on to say that it wasn't really ME, but someone with the same name. Anyway, both times, I got the unwieldy SSSS treatment. The interesting thing is that I also flew DL and NW TATL within the same time frame, and never had any extra screening. I have subsequently flown CO TATL a couple more times and did not get the special phone call "your name is on a watch list" or SSSS treatment.