I worked for Yellow years ago. I medic friend of mine said they are leaps and bounds better than before, so I wish you luck. Many of my cohorts that worked at Yellow I see from time to time working for LMEMS, so there's some wisdom in putting in time in the private side and applying to Metro. If you're a FF, take a look at Anchorage part-time also. Keep your Nat. Registry up, and work on getting Indiana numbers. This will help in the long term, either with Yellow, or finding work later.
If you've need emergency svcs input, let me know. I've worked all sides of it in within Louisville.