The 'USS Connecticut', a Seawolf-class fast-attack submarine, leaves the Kitsap-Bremerton naval base in Bremerton, Washington, on May 27, 2021. US Navy / AFP
The 'USS Connecticut', a Seawolf-class fast-attack submarine, leaves the Kitsap-Bremerton naval base in Bremerton, Washington, on May 27, 2021. US Navy / AFP

US nuclear submarine hits mystery object in South China Sea