Can any boarding pass get you past security at any terminal?
OK, so I was at BOS with 4 hours to check in before my flight to YOW...
So, the AC flights use the US lounge, which isn't strictly in the same security zone as the AC gates. (For those that aren't aware, BOS has no airside connections between terminals as far as I could see, certainly not from Terminal B, unlike, say, IAD, where you can roam freely around the airport.)
So, I thought, I'll go to terminal E and see if I can get past the TSA to the LH lounge.
To my surprise, it worked. Just wondering whether this was because TSA couldn't work out that Ottawa wasn't somewhere in Africa, or whether you can get in to any terminal even though you don't really have any business to be there (as your flight leaves from a completely different terminal).