Not often. But the PJs and rescue helicopter crews are some tough, brave folks. Back in 2002, called to assist with the recovery of dead and injured climbers on Mt. Hood, OR, an Air Force Reserve Pavehawk helicopter crashed and rolled 1000 feet down the mountain.
Incredibly, none of the helicopter crew were killed. Two crewmen were ejected and actually had the helicopter roll over them, but the soft snow meant they survived.
**waves to PaveLow John.**