I understand that SAR injuries are rare. But I lost a family friend, who was also one of my primary Paramedic instructors, Sandy (the flight nurse) and an acquaintance Gary (the pilot) in this one:

https://www.flightforlifecolorado.org/flc/about-us/tribute/

And then I lost another acquaintance, Pat (the pilot) in this one:

http://www.koaa.com/story/29487094/2-injured-in-medical-helicopter-crash-in-frisco-idd

The above were a little different, as they were more medical evacs from my ambulance days than SAR, but still, these folks were "rescuers" in my mind. Sandy and Gary died trying to hover above timberline over an angled mountainside to load an injured climber/hiker. The main rotor clipped the mountain after a big gust of wind. Pat died in an equipment shuttle between medical calls. I do not know the cause of that crash.

I had another friend/co-paramedic that about had his jaw ripped clean off when some unthinking person cut off his ambulance (running hot, with lights and sirens) and caused a crash.

Injuries/deaths DO occur, and they still cause anguish, even if rare.