A US surveillance aircraft has flown over South Korea, an aviation tracker said Wednesday, on an apparent mission to monitor North Korea just days after the communist nation fired what are believed to be two short-range ballistic missiles. The US Navy's EP-3E was spotted in skies above South Korea on Tuesday, Aircraft Spots tweeted. The operation came two days after North Korea fired two projectiles from the eastern coastal city of Wonsan toward the East Sea, marking the fourth major weapons test the North has conducted this year. The United States flew the same type of plane over the peninsula...