South Korea and the United States kicked off a joint air force training exercise Friday to increase interoperability among the airmen of the two allies. About 50 fighter jets, including F-15Ks and KF-16s from South Korea as well as F-16 Fighting Falcons and KC-135 Stratotankers from the U.S., are participating in the eight-day drill, the South Korean Air Force said in a news release. More than 250 pilots from the allies will be mobilized for the drill, named "Max Thunder," to be staged over the western airspace of the Korean Peninsula, it said. "This air readiness exercise is aimed at...