Unfortunately, Boston John was not working at the time. However, my friend was invited back for another visit and is now friends with one of the supes there, so we will see what happens.
Also, when he was speaking with the supe, the topic of LiveATC.net came up. Apparently, many of the controllers use the site to listen to ATC. Generally not to themselves, as that would be weird, but for example if they're about to go to a different facility, they might use it to get an idea of what goes on over there.
He got some pics, but since it was dark out and he couldn't use flash, they aren't very clear. I'll see if there's any that are good enough to post up.