Two Air Force B-1B Lancer bombers fly alongside a pair of Japanese F-15 Eagle over the Sea of Japan Thursday, Jan. 18, 2024. (U.S. Forces Japan)

A pair B-1B Lancer bombers are in the Western Pacific training with U.S. allies and partners, according to Pacific Air Forces.

The supersonic heavy bombers assigned to the 345th Expeditionary Bomb Squadron from Dyess Air Force Base, Texas, arrived Thursday at Paya Lebar Air Base, Singapore, according to a PACAF statement the following day.

The B-1Bs arrived for training on air-to-air refueling with A330 tanker transports from the Singapore air force, according to the statement.

PACAF posted a photograph on X, formerly Twitter, Friday showing two B-1Bs flying alongside a pair of Japan Air Self-Defense Force F-15 Eagle fighters.

A slide posted with the photo said the Dyess-based bombers trained Thursday over the Sea of Japan with four Japanese F-15s from the 2nd Air Wing at Chitose Air Base and the Northern Aircraft Control and Warning Wing at Misawa Air Base, both in Japan.

The training aimed to enhance bilateral response capabilities and tactical skills, according to the slide.

The Japan-based U.S. 5th Air Force referred queries about the training to Dyess’ public affairs office, which did not immediately respond to emails early Monday in Texas.

A pair of Air Force B-1Bs flew alongside South Korean and Japanese fighters on Dec. 20, three days after North Korea fired a pair of ballistic missiles.

The Lancers and two F-16 Fighting Falcons, along with two South Korean F-15Ks and two Japanese F-2s, flew east of Seoul’s Jeju Island south of the Korean Peninsula, according to a news release from the South Korean Ministry of National Defense that day.