In 1949, deep inside the Aberdeen Proving Ground in Maryland, U.S. Army engineers tested a prototype that would change the future of firepower forever — the M61 Vulcan Gatling gun. What started as a postwar experiment quickly evolved into one of the fastest-firing cannons ever built, capable of unleashing up to six thousand rounds per minute. The Vulcan’s six rotating barrels, powered by an electric motor, created a relentless storm of lead and fire that no aircraft or enemy could escape. The te