Sochi Olympics is Accessible to Terrorists

Journalist hops commuter train in Krasnodar bypassing security on January 5th. Ends up in Sochi (250km away) where he passes several different sets of cops and soldiers, who don’t even notice him. Conclusion: it would not be that hard for a terrorist to avoid security measures set up for Sochi.
Note: this experiment took place after the double bombings in Volgograd, but before the Olympic security regime in Sochi went into effect.
h/t Paul Goble