Apologies for slight thread drift but you'll get the idea.
I once boarded a Greyhound bus at Orlando, Florida and the security check post 9/11 was a complete drag, everyone and everything was checked thoroughly.
Reboarding at an intermediary minor stop the next day, yup you guessed it, not a hint of interest from the driver. No security check, nada.
It subsequently crossed my mind that actually the crowded bus station at Orlando was undeniably a juicier target rather than any one particular bus, and so to be effective, screening should really have been upon entering the station rather than boarding.
In light of recent events at Istanbul, isn't it about time we made airports in their entirety secure areas? Not saying I like the idea mind you