HS-4

Helicopter Anti-Submarine Squadron Four (HS-4), also known as the "Black Knights," was established in 1952 by the United States Navy. The squadron gained international recognition during the Apollo space missions, notably recovering the Apollo 11 astronauts after their historic 1969 moon landing. Throughout its history, HS-4 operated various rotary-wing aircraft, including the HSS-1 Seabat and later the SH-60F Seahawk, conducting anti-submarine warfare, search and rescue, and fleet support missions. HS-4 was eventually redesignated as Helicopter Sea Combat Squadron Four (HSC-4) in 2012, continuing its legacy with expanded mission capabilities.