MY 2004.5 DODGE 3500 TRUCK WHILE IN PARK WITH ENGINE RUNNING SHIFTED INTO REVERSE, CAUSING DAMAGE TO THREE VEHICLES. FORTUNATELY NO ONE WAS HURT. THIS IS THE THIRD TIME THE TRANSMISSION HAS JUMPED OUT OF PARK, THE FIRST TWO I THOUGHT MAYBE I DIDN'T HAVE IT ALL THE WAY IN PARK, SO I BECAME AWARE TO CHECK IT, WHICH I DID BEFORE THIS LAST EPISODE. ALTHOUGH I DIDN'T HAVE THE PARKING BRAKE ON, I BELIEVE THIS POSES A VERY SERIOUS SAFETY PROBLEM, WHICH OTHERS MAY BE EXPERIENCING AS WELL.*AK