In the 90's buying a full bag of gear to a "friend", then we spent a moment to speak in the front of his house. One month later he was arrested for big drug traffic (coke/mdma) and went to jail, he was under cop supervision, later when he came off jail he told me about pics the cop took from us when we were speaking in the front of his house.
At that time i worked as a bouncer in a night club, so the few next month i was myself under cop supervision. Not sure, but i remember i saw strange "new customer" at the club, very friendly and always around me. one of these customer was also training at my gym, he disapear one day suddenly from the gym and the club.
In the 90's we were living at our parent home, no place to inject, so we had to do it on a car. One night the car was "fully loaded" with two amp of sust and 4 amp of primo, we saw a cop car at the corner of the streer, silly we were we escape from the car and run. lol.