Here in North Texas I believe we have 3 air services operating. My research organization has worked with 2 of them. I'm sure a portion of their runs could be handled by ground transport, but we see a lot of trauma cases who wouldn't survive ground transport times, and by all accounts the medics are an elite group. We are also seeing an expansion of trauma centers in the region. In both cases, we will eventually move to markets saturation and some will close as they fail to generate revenue.