Good thing the U.S. is friends with the South Koreans (it’s the North that gives us all kinds of grief). This is because they have developed this unmanned "Total Security Solution", a gun named the Super Aegis. Armed with the most advanced killing technology, the Super Aegis is equipped with a machine gun, surface-to-air missiles, sophisticated thermal imagining software and a camera system. It can hit a human sized target from 3 kilometers away, that’s 1.86 miles ladies and gentlemen. The gun most likely will be used to guard the demilitarized zone between North and South Korea.
Check out Reuters for a fascinating video on the weapon.