Keywords: Helicopter Anti-Submarine Squadron 4 (US Navy) patch 1961.png en Insignia of the U S Navy Helicopter Anti-Submarine Squadron 4 HS-4 Black Knights 1961 U S Navy photo http //navysite de/cruisebooks/cv10-61/092 htm from the http //navysite de/cruisebooks/cv10-61/index_016 htm USS Yorktown CVS-10 1961-62 cruise book available at http //navysite de/cruisebooks/index html Navysite de USN PD-USGov-Military-Navy PD-USGov-Military-Badge Helicopter Anti-Submarine Squadron 4 United States Navy United States Navy helicopter anti-submarine squadron emblems 004 |