This Aircraft Carrier Cannon Fires 4,500 Rounds a Minute

The CIWS is the affectionate nickname given to a 20mm Vulcan Cannon on board the USS George H.W. Bush aircraft carrier. It fires 4,500 rounds a minute, can hit a target five miles away and has bullets that are twice the normal size. From the Series: Carriers at War: http://bit.ly/2rojvHh