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)
Islamic Revolutionary Guard Corps (IRGC) members march during the annual anti-Israel Al Quds Day rally in Tehran, Iran, on April 29, 2022. (Photo by Sobhan Farajvan/Pacific Press/LightRocket via Getty Images)
Xi Jinping makes a public pledge of allegiance to the constitution at the Great Hall of the People in Beijing, China, on March 10, 2023. (Ju Peng/Xinhua via Getty Images)
Iranian Supreme Leader Ali Khamenei attends the joint graduation ceremony of armed forces cadets at Imam Hussein Military University in Tehran, Iran, on October 3, 2022. (Iranian Leader Press Office/Handout/Anadolu Agency via Getty Images)
Vladimir Putin on a screen set at Red Square in central Moscow as he addresses a rally marking the annexation of four regions of Ukraine on September 30, 2022. (Alexander Nemenov/AFP via Getty Images)