We all wish we could go back in time and make him throw a vest on.
Do you actually think a man who who dangle his infant son over a crocodile would wear a vest to protect himself?
This man lived life on the edge, and made those choices for his young children as well. He ultimately paid the price. If his children choose to follow in his footsteps, I hope it will be when they are of age, and can make the decisions for themselves.
Beware of your comfort zone.
Is there easily available such a thing as a "rayproof vest"? Most bullet proof vests can be easily pierced by a sharp knife or ice pick.