There are two kinds of helicopter pilots: Those that have crashed, and those that will crash.
Bite me. I know lots of helicopter pilots with thousands of hours and no crashes. Must be that Navy training.
That said, these medevac pilots do some of the most dangerous and stressful flying of any civilian helo pilot. On standby, short notice takeoff, landing at unimproved sites, often at night. In my opinion, night vision equipment would be the single most effective safety improvement they could make.