The B-1B Lancers from Guam were deployed in the sky over the peninsula Tuesday as part of a regular combined exercise with the South's fighter jets, the official said. The allies did not announce the mission in advance.
North Korea's military threatened Wednesday to launch an intermediate-range ballistic missile attack on "areas near Guam" in order to contain the U.S. military's strategic assets based on the Pacific island.
The North is apparently unnerved by the frequent appearance of U.S. bombers, aircraft carriers and nuclear submarines in the vicinity of its territory.
The U.S. dispatched two B-1Bs late last month in response to the North's test-firing of another intercontinental ballistic missile., source from the Yonhap.