RedactedNarrative: PWC #1 was traveling directly behind PWC #2 when PWC #2 lost power and became disabled. Upon becoming disabled, PWC#2 was impacted on the rear Starboard quarter by PWC#1 at a high rate of speed. This impact threw both operators into the water and caused substantial damage to PWC #2. The operator of PWC #2 was transported by B.L. CO. ambulance to Bear Lake Memorial Hospital.