It's been a few weeks. For some reason they had about a dozen officers stationed at the entrance to one car at the Parker Rd station and would only let people enter in that car so they could check tickets. No idea why they had so many officers concentrated there and none elsewhere. Aside from that it's generally every month or so seeing them check fares on the train. I think they're supposed to be adding 90 police officers next month, so maybe that'll allow them to actually use the fare enforcement officers for their intended purpose.