Flying Securely

Marked S. Enter an airport and that's about the last thing you want to happen. Your ticket is scared with dozens of esses in the corner. It means you have been "randomly" selected for an ultra thorough security screening, potentially adding a lot of time to your trip.

I've flow 3 times in the last 10 days or so. Each time I got marked S. Flown a ton since S11 don't think I've been selected for the secure screening more then 3 times over the whole time. Has my luck just ran out? Or am I now on some list? Flying a few more times soon, guess I'll find out...