 The first person goes through security, not a problem. The second person has a belt on, things in his pocket that stops you from passing. So your laptop has gone through on the belt, ends up in the hands of the first person who walks away with it. That's why when you're traveling, always, always, always keep an eye on your expensive electronics. And in case it does go missing, turn on Find My Device on anything that you can. This actually happened to me with a pair of really expensive headphones once. So, yeah, it does.