Kennedy + female/s + moving vehicle = recipe for disaster
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I believe the equation is:
Kennedy + operating a vehicle + water = disaster.
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John F Kennedy - Driving PT-109 boat + Pacific = run over by Japanese destroyer Amagiri + two died
Teddy The Liquor Pig - Driving Oldsmobile + pond = 1 dead woman.
Michael Kennedy - Wearing Skis + snow + tree = killed.
John-John Kennedy - Piloting Plane + Atlantic Ocean = killed 3.
You almost have the formula correct:
Kennedy + female(s) + moving vehicle + large body of water = death(s).
Don't forget to add water.