A U.S. B-52 bomber was sent near disputed islands in the South China Sea and another circumnavigated Japan, conducting joint military exercises with the Air Self-Defense Force, the U.S. Pacific Air Forces said Wednesday.

Monday's mission in the contested South China Sea was the first reported flight in the area by a B-52 since November.

The Pacific Air Forces (PACAF) said that the two B-52s had taken off from Andersen Air Force Base on the U.S. island territory of Guam, and participated in "routine training missions."