Ok, Today at about 9:20am, when I was spotting at PDX There was a procession of some sort But there's no Hearst, It was a port of Portland police SUV, Followed by a sedan type looking car And two black SUVs And then another port of Portland police cars, Both the police cars have their lights going. a little while after that a Pilot asked the Tower or ground What was with the perception, But unfortunately the feed Cut out and i had to restart it, but by the Time I got the feed back up the conversation was. I was wondering if anybody knew anything about, And if they could find that conversation? By the way this happened on the Concours a b and c side of the airport, And they seem to have came from where the post office is or around there, And about 10, 15 minutes later They went back the way they came.