Can you imagine having an idea that could save the lives of police officers and military personnel by protecting them from gunfire from criminals and bullets in battle? The idea is great but at some point you have to show proof of concept and have someone try it in a real situation. As far back as 1538 when Francesco Maria della Rovere commissioned Filippo Negroli to create a bulletproof vest, people have been trying to protect themselves from harm. Early versions were iron and even silk. But the first test of the modern version of the bulletproof vest took place in Washington, D.C. in September 1923.