Register now for FREE unlimited access to Reuters.comNorth Korea test-fired an intermediate-range ballistic missile (IRBM) farther than ever before on Tuesday, sending it soaring over Japan for the first time in five years and prompting a warning for residents there to take cover.South Korean and American troops fired a volley of missiles into the sea in response, South Korea's Joint Chiefs of Staff said on Wednesday, and the allies earlier staged a bombing drill with fighter jets in the Yellow Sea.The aircraft carrier Ronald Reagan, a U.S. Navy ship that made its first stop in South Korea last month for the first time in years, will also return to the sea between Korea and Japan with its strike group of other warships.Speaking during a visit to Chile, Blinken said the United States, South Korea and Japan were working closely together "to demonstrate and strengthen our defensive and deterrent capabilities in light of the threat from North Korea."South Korean President Yoon Suk-yeol, who has made such displays of military force a cornerstone of his strategy for countering North Korea, had vowed that the overflight of Japan would bring a decisive response from his country, its allies and the international community."