They're at PVG, although without the intimidation. My wife set them off--a hoop that looks like the metal detector and then a second one at customs that looks like the theft-tag-detection pillars you see in many stores.

Note that if you know you're going to be traveling you ask for a card at the place that nuked you--they have a little thing that says how much of what isotope you got.

We knew she would be slightly hot and got the card. She changed jackets at the last moment and left it home. We got through LAS and SFO fine, it was only PVG that pinged and that was 10 half-lives after the test. They asked her about nuclear exposure, she immediately mentioned the test. No big deal, they didn't even attempt to isolate that it was her and not something she was carrying. (Note: She's a native speaker, there was no communications problems.) We never left the vicinity of the detection machine and were on our way in a few minutes.

When she hit the second detector at customs nobody even cared.