A guy in my old apartment building was a private detective.
It was interesting to see him come in and out of the building sometimes dressed in different ways to blend in...and of course, to make his camera blend in as best as he could
It seems kind of unprofessional though, to talk loudly about it in a resturant. Talk about easy ways to get found out. Couldn't he do it somewhere else? Like an office, or his home or something?