I don't believe that Comair is the only place that you can interview with upon completion of the DCA program. I believe they have agreements with all DCI carriers to interview successful graduates. If Comair is still interviewing, then DCA is probably still sending grads over there for the interview. Successful interviewees will be put ina pool for the next class date. If they're not even interviewing, then I guess grads will be offered an interview with one of the other carriers.
Someone else may have some inside knowlege and more specific information for you.
Ray