It's hard to explain but the rush is different. I hate traumas in the ER, but I miss traumas in the field. Maybe it is the situation surrounding the field trauma, the lights, the noise, the smells, etc, I don't know. Maybe it is just nostalgia from an old guy who misses his younger days. I think it all depends on where you are. Where I came from, if you wanted to carry a central line kit, you could carry it and use it.