When I worked at the WH, a guy I worked with had the same kind of thing. Ironically or not, he was the NSC proliferation expert. Anyway, apparently (I didn't know this until that moment) there are radiation sensors built into the Georgian woodwork doorframe around the entrance to the West Wing. One day we were going in for a meeting and as soon as we passed through the entrance (side by side), three huge Secret Service sides of beef got up, grabbed him by the upper arm and said "Come with us please, sir" and he was gone. I was stunned.
Then I saw him the next day and I said, "_____, WTF was that?" And it was a medical radiation treatment. They accepted his explanation and let him go.