I live and work on the green line and at this point only take the train occasionally, yet within a span of a few weeks I was on a car with a guy inhaling smoke from something that looked like a bong (but definitely not weed - no smell like that), and then I was on another car a separate time where I watched a drug deal of something in a little foil/paper packet (kind of like a gum wrapper folded up) and watched the guy snort it and also share a huge bottle of Bombay sapphire with a friend. Lived here 20 yrs and I don’t recall seeing behavior like that before. Oh yeah, I forgot — and in the latter incident, one of the guys involved pulled out a knife at one point!