Operation Fishnet, Korea, 1952 U.S. Navy Underwater Demolition Team members inspect glass ball floats used on North Korean fishing nets. The nets were captured during Operation Fishnet, whose mission was the destruction of the main source of Communist forces' food supply, the nets of North Korean fishermen. U.S. Navy UDT Frogmen took part in this operation. Photograph is dated 16 September 1952. Official U.S. Navy Photograph, now in the collections of the National Archives.