We’re warning you before you go any further with this post: this is pretty unsettling to watch. Because, sadly, it’s of a crash.

It’s video of a 1979 Bell Jet Ranger falling out of the sky and into shallow water Thursday near the famous USS Arizona memorial in Pearl Harbor, in Hawaii.

All five people aboard the helicopter survived, however, one is still in critical condition, according to local news reports.

Once the chopper’s rotors stopped turning, courageous bystanders jumped into the water and rescued the passengers.

According to Foxtrot Alpha, the private aircraft was owned by tour operator Genesis Aviation. The FAA and NTSB are investigating the accident.