To anyone who still needs (or knows someone who needs) an appointment to be vaccinated, for example college students & teenagers: The huge FEMA drive-through vaccination site (at Roosevelt school in Gary, which is on 25th, right off I-94) is not very busy, and is a breeze to get to, and get through. You sign up online on the Indiana dept of health website, called the “vaccine waiting room,” which is also easy to use (https://vaccine.coronavirus.in.gov). The website tells you which locations have which brand of vaccine. Anyone over 16 can get shot in Indiana, and Chicagoans are welcome. There are multiple locations just over the state line (Hammond, East Chicago, etc), and they have appointments. (I don’t know which ones are large FEMA drive-throughs, other than the Roosevelt site on 25th.)