First commissioned in 1976, the USS Los Angeles–class submarines became the backbone of U.S. undersea dominance during the Cold War. Each unit cost roughly $900 million–$1.2 billion to build. Operating a single submarine requires an estimated $60–70 million per year, even in peacetime. Many never fired a weapon in war, yet for decades they silently guarded oceans where failure was never an option.. #ww2 #military #ship #navy #veterans #USSLosAngeles #NuclearSubmarine #ColdWarNavy #NavalEngineeri