Before I got into EMS I had no idea how much your chances of survival could be influenced by where you live. Not all hospitals are created equal, and not all have specialists for every possible thing that can happen. Same with ambulance companies and fire departments. They can have very different response times, and the level of expertise, training, and experience can vary a lot.
The problem with a brain stem stroke is that it is pretty rare compared to a hemorrhagic stroke or ischemic stroke. The treatment for each is different, so it is important to figure out which kind it is as quickly as possible.
Call me crazy, but when I moved I made sure that I was close to a level 1 trauma center as well as a stroke center. I want to make sure that the odds are as much in my favor as I can make them.