US deployed a B-52 bomber on a low-level flight over its ally South Korea on Sunday

Via Reuters:

• The United States deployed a B-52 bomber on a low-level flight over its ally South Korea on Sunday, a show of force following North Korea's nuclear test last week.
• The massive B-52, based in Guam and capable of carrying nuclear weapons, could be seen in a low flight over Osan Air Base at around noon (0300 GMT)
• It was flanked by two fighter planes, a U.S. F-16 and a South Korean F-15, before returning to Guam, the U.S. military said in a statement
• Osan is south of Seoul and 77 km (48 miles) from the Demilitarised Zone that separates the two Koreas. The flight was "in response to recent provocative action by North Korea", the U.S. military said.