Actually they still do drown proofing.
I am a competitive swimmer, i spend 8+ hours a week either in the water or on land lifting. When i attempted to do their drown proofing tests, i almost died. It was incredibly hard. Don’t worry we did it in pairs and no one was hurt. But i must tell you it scares the hell out of you and i thought i was gonna die. Now i think driving a fucking Jeep at people is a little excessive BUT it’s pretty creative.
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No bad intentions