My boss and I were on an extended business trip to the USA earlier this year. We had a week in mid west, then a week in Florida, so decided to take a weekend detour and flew to Park City for a couple of days.
We were blown way by the friendliness of everyone, but also a little concerned at the lack of protection on the runs - trees, holes without nets or padding, blind junctions, etc. In Europe you would find six feet of orange padding around most of these hazards.
Anyway, we were just mocking the US passion for helmets, when we met up with a couple of moutain medics who had just carried a 'body' off the hill. Apparently the guy had run off the piste, gone off a drop, hit a tree and then been lying for a few hours until found, just about alive but with major fractured skull, damaged spinal column, and broken pelvis. The medics believed he would expire on the way to ER.
He wasn't wearing a helmet which the medics considered would have saved his life at least.
We went straight to the outlet and bought helmets!
Al G