Royal Australian Navy submarine HMAS Sheean arrives in Devonport on April 22, 2021 in Tasmania, Australia. (Photo by POIS Andrew Dakin/Australian Defence Force via Getty Images)
A Taliban fighter mans a machine gun mounted on a vehicle near the venue of an open-air pro-Taliban rally on the outskirts of Kabul on October 3, 2021 (Photo by HOSHANG HASHIMI/AFP via Getty Images)
Battle Group Poland U.S., U.K and 15th Mechanized Brigade Polish tactical vehicles perform river crossing training June 19 in Rukla (U.S. Army photo by Spc. Kevin Wang/Released)
A plane director signals to the pilot of an F/A-18C Hornet from the "Wildcats" of Strike Fighter Squadron (VFA) 131 after landing on the flight deck of the Nimitz-class aircraft carrier USS Dwight D. Eisenhower (U.S. Navy)
Members of a Chinese honor guard stand in formation before a ceremony to mark Martyr's Day at Tiananmen Square in Beijing, Monday, Sept. 30, 2019. (Photo by Mark Schiefelbein - Pool/Getty Images)