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)
Protesters take part in the rally for the beginning of Occupy Central movement outside Central Government Offices in Central, Hong Kong on August 31, 2014. (Lam Yik Fei/Getty Images)
Russia's President Vladimir Putin attends a meeting in his Novo-Ogaryovo residence, outside Moscow on February 26, 2014. (MIKHAIL METZEL/AFP/Getty Images)
Egyptian demonstrators clash with Egyptian police in central Cairo during a protest to demand the ouster of President Hosni Mubarak and calling for reforms on January 25, 2011. (MOHAMMED ABED/AFP/GettyImages)