Three Witnesses See Red, Blue Flashing Lights Flying Erratically in Circles Near Seattle-Tacoma Airport

Date of Sighting: May 18, 2006
Date Sighting Reported: May 22, 2006
Time of Sighting: 10:05 PM PDT
Location of Sighting: Kent, Washington (Near Seattle-Tacoma International Airport)
Duration of Sighting: 10 Minutes
Latitude:  47.35 Degrees North
Longitude:  122.23 Degrees West
Number of Witnesses: Three
Weather: Scattered Clouds. Visibility 10 Miles.

Description In Witness's Own Words): Ok, I've never been a big believer in "sightings" and generally felt that those who saw these things were... a bit loony. So, call me a loon. Thursday night, May 18, at approximately 10:05 pm while my neighbor and I were outside chatting, she stopped talking mid-sentence, and while looking up into the clear sky, said, "What is that?!" There was "something" flying above, lowish, but higher than a plane coming from Seattle-Tacoma Airport. They occasionally fly over our area and fly lower than whatever it was we saw. She ran in to get her 17 year old son--who of course thought we were both totally berserk--until he saw it too. We watched an object with red & blue flashing strobe-like lights, flying in small circles, overhead, then straight up until out of sight. The whole thing lasted about 10 minutes. It was not a plane--they do not disappear straight up, but over the horizon. The lights were, as I said, red & blue and flashed similar to a strobe light. It was silent. It looked as if it flew erratically, but it may have been due to the lights. I would not have believed it, if the three of us hadn't been out there together. Can you tell me if anyone else has reported this sighting? I didn't see anything on the news.

Investigator's Notes:  I don't know what the witnesses observed.  I don't believe that a helicopter, airplane, or balloon (hot air) would explain what the witnesses observed.  Perhaps with more witnesses and data this sighting could be explained.