First of all Dawson, Hermann, and Otis co-own Molly's and Second Otis was the Candidate before Peter Mills shows up at Firehouse 51, lastly Third they transport patients to both Lakeshore and Chicago Med depending on which the closest one is on their call.
sorry i made the quiz at 12am but that's what i thought i just haven't seen season 1 again cause i am up to season 10 and again i am sorry but i hoped you enjoyed the quiz.