How to get free train travel

I got on my train at Grand Central, yesterday, and waited for it to pull out of the station.

This guy sat next to me, quite wide, solid, head like a bullet, all in denim, jacket and jeans. He was very polite. "Would you mind if I sat there?" Once sitting, he pulled out a blackberry and an ear piece and shut his eyes. Stayed like that for most of the trip. When the conductor/guard came around asking for tickets, this guy pulled out his wallet and opened it, keeping low, near his leg. It showed a photo-id with the word 'POLICE' under the photo. The conductor/guard asked him where he was getting off and then passed by.

Free travel for cops!

I spent the rest of the journey trying to spot his gun.