U.S. Navy guided-missile destroyer USS Porter (DDG 78) sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, April 13, 2020. REUTERS/Yoruk Isik

Vietnamese border guard officers visit the guided missile ship USS Bunker Hill (CG-52) as the ship follows the visiting USS Theodore Roosevelt (CVN-71) in Da Nang city, Vietnam, March 6, 2020. REUTERS/Kham

Sailors of the USS Theodore Roosevelt (CVN-71) wear Vietnamese communist soldiers hats and salute as they visit Da Nang city, Vietnam, March 6, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen near Vietnamese fishing boats at a port in Da Nang city, Vietnam, March 6, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering into the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering into the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering into the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering into the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is pictured as it enters the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is pictured entering the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

A fisherman is pictured as the USS Theodore Roosevelt (CVN-71) enters the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham

The USS Theodore Roosevelt (CVN-71) is seen while entering the port in Da Nang, Vietnam, March 5, 2020. REUTERS/Kham TPX IMAGES OF THE DAY

U.S. Navy guided-missile destroyer USS Ross sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, February 23, 2020. REUTERS/Yoruk Isik

U.S. Navy guided-missile destroyer USS Ross sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, February 23, 2020. REUTERS/Yoruk Isik

U.S. Navy guided-missile destroyer USS Ross sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, February 23, 2020. REUTERS/Yoruk Isik

U.S. Navy guided-missile destroyer USS Ross, with the Blue mosque in the background, sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, February 23, 2020. REUTERS/Murad Sezer

U.S. Navy guided-missile destroyer USS Ross sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, February 23, 2020. REUTERS/Yoruk Isik

A member of the armed forces closes the door of a departure vehicle containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces salute during the dignified transfer of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces lift a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces carry a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces lift a transfer case containing the remains of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

Members of the armed forces pray over the transfer case of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

A member of the armed forces stands guard near the transfer case of Petty Officer 3rd Class Eduardo M. RoqueVazquez, of Kissimmee, Florida, who was honored in a dignified transfer at Dover Air Force Base in Dover, Delaware, U.S. February 6, 2020. RoqueVazquez, who was assigned to the USS Farragut, died of a non-combat related incident on February 3. REUTERS/Michael A. McCoy

U.S. Navy guided-missile destroyer USS Ross (DDG 71) sets sail in the Bosphorus, returning from the Black Sea, in Istanbul, Turkey, December 28, 2019. REUTERS/Murad Sezer

U.S. Navy guided-missile destroyer USS Ross (DDG 71) sets sail in the Bosphorus, returning from the Black Sea, in Istanbul, Turkey, December 28, 2019. REUTERS/Murad Sezer

U.S. Navy guided-missile destroyer USS Ross sails in the Bosphorus, on its way to the Black Sea, in Istanbul, Turkey, December 15, 2019. REUTERS/Yoruk Isik

Map shows the routes of the USS Jeannette and the USS Rodgers. embed code and instructions: https://reut.rs/2sdjFUZ

A detail in Volume 1 of the USS Rodgers logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

A detail in Volume 1 of the USS Jeannette logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

A detail in Volume 1 of the USS Jeannette logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

A detail in Volume 1 of the USS Jeannette logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

Archive specialist Gina Perry displays Volume 1 of the USS Jeannette logbooks at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

The title page of Volume 1 of the USS Jeannette logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

The spine of Volume 1 of the USS Rodgers logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

The title page of Volume 1 of the USS Jeannette logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

A detail in Volume 1 of the USS Rodgers logbooks is pictured at the National Archives building in Washington, U.S., December 2, 2019. Picture taken December 2, 2019. To match Special Report CLIMATE-CHANGE/ICE-SHIPLOGS REUTERS/Loren Elliott

After departing USS Somerset U.S. Marines and Sailors from the 1st Marine Division conduct an amphibious landing during "Exercise Steel Knight" at Camp Pendleton, California, U.S., December 6, 2019. REUTERS/Mike Blake

After departing USS Somerset U.S. Marines and Sailors from the 1st Marine Division conduct an amphibious landing as they participate in "Exercise Steel Knight" comprising of approximately 13,000 personnel include critical combat and combat service support elements from across I Marine Expeditionary Force (MEF) at Camp Pendleton, California, U.S., December 6, 2019. REUTERS/Mike Blake

After departing USS Somerset U.S. Marines and Sailors from the 1st Marine Division conduct an amphibious landing as they participate in "Exercise Steel Knight" comprising of approximately 13,000 personnel include critical combat and combat service support elements from across I Marine Expeditionary Force (MEF) at Camp Pendleton, California, U.S., December 6, 2019. REUTERS/Mike Blake

After departing USS Somerset U.S. Marines and Sailors from the 1st Marine Division conduct an amphibious landing during "Exercise Steel Knight" comprising of approximately 13,000 personnel include critical combat and combat service support elements from across I Marine Expeditionary Force (MEF) at Camp Pendleton, California, U.S., December 6, 2019. REUTERS/Mike Blake

After departing USS Somerset U.S. Marines and Sailors from the 1st Marine Division conduct an amphibious landing as they participate in "Exercise Steel Knight" comprising of approximately 13,000 personnel include critical combat and combat service support elements from across I Marine Expeditionary Force (MEF) at Camp Pendleton, California, U.S., December 6, 2019. REUTERS/Mike Blake

Chairman of the Joint Chiefs of Staff General Mark Milley meets service members in front of the USS Sirocco in Manama, Bahrain on November 25, 2019. REUTERS/Idrees Ali

Chairman of the Joint Chiefs of Staff General Mark Milley meets service members in front of the USS Sirocco in Manama, Bahrain on November 25, 2019. REUTERS/Idrees Ali

An F/A-18E Super Hornet lands on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/Hamad I Mohammed

An F/A-18E Super Hornet is seen making its way to runway for landing on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/ Hamad I Mohammed

An ammunition and ordinates specialist gives a thumbs-up as she stands by during landing procedure on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/Hamad I Mohammed

Shooter and Controler prepare an F/A-18E Super Hornet to be catapulted off from the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/Hamad I Mohammed

Flight deck technicans do an emergency repair to one of the arresting caples on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/Hamad I Mohammed

Flight deck technicans do an emergency repair to one of the arresting caples on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/ Hamad I Mohammed

An F/A-18E Super Hornet lands on the flight deck of the aircraft carrier USS Abraham Lincoln (CVN 72) in the Gulf, November 23, 2019. REUTERS/Hamad I Mohammed