During the Korean War several new bulletproof vest were produced for the U.S. military, including the M-1651 which brought a great improvement in weight. However, it was not very effective level of protection against bullets and shrapnel. The life of the Vietnam War made use of various combinations of nylon, new ceramic able to block bullets, fiber glass and materials used in steel armor of the Second World War and Korean War.

In 1968, the American Body Armor was founded and produced a combination of nylon covered with several steel plates. This type of jacket was sold by the company firearm Smith & Wesson under the name “Barrier vest” for the police.

In the mid 1970s, DuPont Corporation introduced the synthetic fiber Kevlar which was designed to reinforce tires. The National Institute of Justice submitted new material in a methodical evaluation in order to check if the Kevlar would stop a shot first, and determine the number of layers needed to get there. Lester Shubin, who was appointed coordinator of this assessment, provides a report that ultimately approved the Kevlar (as material) could provide good protection, which was mild and could be comfortably worn by police officers regularly, and save lives.

In 1975, Richard A. Armellino, the founder of American Body Armor, Marketing a vest made entirely of Kevlar, named K-15, consisting of 15 layers of Kevlar and a steel plate ballistic 5 “x8″ vertical height of the heart. This type of plate is still used in modern bulletproof vest to reduce internal injuries in the heart and sternum.

In 1976, Richard Davis, the founder of Second Chance Body Armor, Developed the first body armor company made entirely of Kevlar. It is named model Y, lightweight vest that allowed him to become the new form of protection for modern police forces. In the mid 1980s, an estimated then that between one third and half of the officers on patrol in the United States has the bulletproof vest on a regular basis. In 2006, the U.S., over 2,000 police officers have had their lives saved by this revolutionary jacket, thus proving the adequacy of body armor as part of standard equipment for the police.