<sod >The U.S. military flew two B-1B supersonic bombers and two F-35 fighter jets over South Korea on Thursday in a show of force following North Korea's latest ballistic missile launch, a South Korean defense official said.< eod>< sod > The U.S. military flew two B-1B supersonic bombers and two F-35 fighter jets over South Korea on Thursday in a show of force following North Korea's latest ballistic missile launch, U.S. and South Korean defense officials said.< eod>