Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)
Chinese sailors stand next to a submarine rescue ship Hongzehu from the PLA Navy as it is docked on April 23, 2024, in Qingdao, China.(Kevin Frayer via Getty Images)
Researchers with the Naval Postgraduate School and NASA employ a REMUS 100 UUV to create a detailed map of a shallow environment off the coast of Florida on September 13, 2013. (DVIDS
Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)
Chinese sailors stand next to a submarine rescue ship Hongzehu from the PLA Navy as it is docked on April 23, 2024, in Qingdao, China.(Kevin Frayer via Getty Images)
The Skydio X10D drone flies during a counter-uncrewed aerial systems training exercise at Grafenwoehr Training Area in Bavaria, Germany, on February 13, 2025. (US Army photo)
South Sudanese military police officers monitor the area during a South Sudanese Unified Forces deployment ceremony at the Luri Military Training Centre in Juba on November 15, 2023. (Peter Louis Gume/AFP via Getty Images)
South African President Cyril Ramaphosa speaks during a meeting of African leaders with Russian President at the Konstantin Palace in Strelna on June 17, 2023 in Saint Petersburg, Russia. (Contributor via Getty Images)
North Korean soldiers attend a mass rally to celebrate the North's declaration in Kim Il-Sung Square in Pyongyang, on December 1, 2017. (Kim Won-Jin/AFP via Getty Images)
Christians hold signs as they march on the streets of Abuja during a prayer and penance for peace and security in Nigeria on March 1, 2020. (Kola Sulaimon/AFP via Getty Images)