What is the history of Kevlar?

The modern incarnation of the bulletproof vest using Kevlar was first experimented with by an individual in Detroit, who was a pizza delivery guy. He had previously been shot multiple times and decided to take matters into his own hands. He obtained Kevlar and tested its bulletproof capabilities by shooting himself while wearing it. This story highlights an interesting, unexpected development in the use of Kevlar, which was earlier used for other purposes before its application in bulletproof vests 1 .