There are eleven BK117's similar to the one pictured in my company's fleet. It's not out of the ordinary for three or four of us to be flying at any given time.
Last night, on my way into Bigtown with a non-helmet using motorcycle accident victim, our #3, #4, #7, #9, and #11 aircraft were all airborne, talking on our company radio. The #4 aircraft had just called to report his takeoff, and our dispatcher gave this report about a patient similar to the one I had on board:
"Your patient is a 23 year old male, victim of a motorcycle accident. Your patient was not wearing a helmet. He has a head injury, a broken femur, multiple abrasions and lacerations. I also need to tell you that at this time his parents are reluctant to release him to fly."
Then, five minutes later-
"****#4, return to base, your flight is canceled. Patient will travel by ground."
Here's a guy brave and intelligent enough to ride a motorcycle without a helmet, yet his parents are afraid for him to fly in a helicopter!
Whassup with that?