I just entered and quickly left a men's room at DIA, my departure provoked by someone smoking while ensconced in a stall. Not seeing a security guard or a white phone in the vicinity, I didn't report the scofflaw, though I'd have been thrilled to see him getting a serious talking-to, hopefully accompanied with a hefty fine. Ideally, the procedure would take long enough for him to miss his flight.

I got to wondering whether anyone here knows how DIA and other airports deal with these incidents.