U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

Crews are seen on the flight deck of the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy MH-60 Seahawk helicopter and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet takes off on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet takes off on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy MH-60 Seahawk helicopter and F-18 Super Hornet are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy MH-60 Seahawk helicopter and C-2 Grayhound are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE- CORRECTING EVENT NAME 

A crew member works on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

U.S. navy MH-60S Seahawk helicopter and crews are seen on the flight deck of the USS Nimitz, off the coast of Busan, South Korea, 27 March 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A US navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet lands on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A crew works next the US navy F-18 Super Hornets on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet lands on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A U.S. navy Early Warning Aircraft Hawkeye and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A U.S. navy F-18 Super Hornet and crews are seen on the flight deck on the USS Nimitz, off the coast of Busan, South Korea, 27 March, 2023. The ROK-US combined maritime exercise is a part of Warrior Shield. Jeon Heon-Kyun/Pool via REUTERS REFILE - CORRECTING EVENT NAME 

A U.S. Marine rests in the U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A U.S. Marine rests on the U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

Landing Craft Air Cushion (LCAC) and armoured vehicles are seen inside the U.S. Amphibious Assault Ship USS Makin Island anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A U.S. navy crew member walks past U.S. Marine Corps MV-22 Ospreys and F-35B fighter jet on the deck of the U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A view of armoured vehicles inside the U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

General view shows the deck of the U.S. Amphibious Assault Ship USS Makin Island anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A general view shows the U.S. Amphibious Assault Ship USS Makin Island anchored at a naval base in Busan, South korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A U.S. navy crew member stands next to U.S. Marine Corps MV-22 Ospreys on the deck of the U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

U.S. navy crew members rest underneath the deck of the U.S. Amphibious Assault Ship USS Makin Island, as F-35B fighter jets are seen on the deck, at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

A U.S. navy crew member works on a F-35B fighter jet on the deck of U.S. Amphibious Assault Ship USS Makin Island, anchored at a naval base in Busan, South Korea, March 23, 2023. REUTERS/Kim Hong-Ji 

U.S. Navy aircraft carrier USS Ronald Reagan is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

A crew member stands in front of U.S. Navy F/A-18 jets that sit on the deck of the USS Ronald Reagan as it is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

A crew member stands in front of U.S. Navy F/A-18 jets that sit on the deck of the USS Ronald Reagan as it is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

Crew members look out from U.S. Navy aircraft carrier USS Ronald Reagan which is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

A U.S. Navy F/A-18 jet sits on the deck of the USS Ronald Reagan as it is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

A crew member walks past an F/A-18 fighter jet that sits on the deck of the U.S. Navy aircraft carrier USS Ronald Reagan during a visit to Busan, South Korea, September 23, 2022. REUTERS/Josh Smith 

Crew members walk past an F/A-18 fighter jet on the hanger deck of the U.S. Navy aircraft carrier USS Ronald Reagan during a visit to Busan, South Korea, September 23, 2022. REUTERS/Josh Smith 

A U.S. Navy F/A-18 jets sit on the deck of the USS Ronald Reagan as it is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Josh Smith 

South Korean navy soldiers greet the U.S. Navy aircraft carrier USS Ronald Reagan at a port in Busan, South Korea, September 23, 2022. REUTERS/Josh Smith 

Crew members of the U.S. Navy aircraft carrier USS Ronald Reagan line up to board busses upon its arrival in Busan, South Korea, September 23, 2022. REUTERS/Josh Smith 

U.S. Navy aircraft carrier USS Ronald Reagan approaches a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

U.S. Navy aircraft carrier USS Ronald Reagan is anchored at a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

U.S. Navy aircraft carrier USS Ronald Reagan approaches a port in Busan, South Korea, September 23, 2022. REUTERS/Daewoung Kim 

An employee works at a cafe as Kori Nuclear Power Plant is seen through a window in Busan, South Korea, August 19, 2022. REUTERS/Kim Hong-Ji 

People enjoy themselves at a cafe at Imrang beach as Kori Nuclear Power Plant is seen in the background in Busan, South Korea, August 19, 2022. REUTERS/Kim Hong-Ji 

People enjoy a late summer day at Imrang beach as Kori Nuclear Power Plant is seen in the background in Busan, South Korea, August 19, 2022. REUTERS/Kim Hong-Ji 

A woman takes a sun bath at Imrang beach near Kori Nuclear Power Plant in Busan, South Korea, August 19, 2022. REUTERS/Kim Hong-Ji REFILE - CORRECTING DESCRIPTION 

A transmission tower is silhouetted against the setting sun near Kori Nuclear Power Plant in Busan, South Korea, August 18, 2022. REUTERS/Kim Hong-Ji 

A woman holding her child looks at Kori Nuclear Power Plant at Imrang beach in Busan, South Korea, August 18, 2022. REUTERS/Kim Hong-Ji 

A man sets up a beach umbrella at Imrang beach as Kori Nuclear Power Plant is seen in the background in Busan, South Korea, August 18, 2022. REUTERS/Kim Hong-Ji 

A truck driver stands next to his truck as he gets ready to transport a shipping container at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

Shipping containers are stacked at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

A giant crane moves a shipping container at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

Trucks transporting shipping containers travel at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

Shipping containers are stacked at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

Shipping containers are stacked up on a container ship at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

A truck driver walks past trucks transporting shipping containers at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji 

A container ship leaves Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021.REUTERS/Kim Hong-Ji 

An employee walks at Pusan Newport Terminal in Busan, South Korea, July 1, 2021. Picture taken on July 1, 2021. REUTERS/Kim Hong-Ji