Be careful hitching up

My neighbor was getting ready to move his boat/boat trailer yesterday. He had a front bumper hitch and was nosed up to the trailer. He got out of the truck didn't realize it was in reverse with the parking brake, wheels cramped to the right. The truck started to roll back, and he attempted to get in and stop it. It knocked him down and the front wheel of his dodge 2500 rolled over his pelvis. Fractured it bad. It will be a long painful recovery. He is older, and has difficulty now, so possibly the end of these kind of recreational things. At least the neighbor on the other side heard the truck as it rolled down an embankment and across the drive into a tree.

Shook me up a lot. Lets all remember to take it slow when doing these things, especially when it's been since last season we got them out, and may not be used to doing it.