Pearl Harbor is an area of Hawaii, known for its United States Navy base. It was Japan's attack on Pearl Harbor that led to the United States of America entering World War II. (TXF: "Triangle")
After being damaged by a UFO in the Pacific Ocean, the Zeus Faber managed to limp to Pearl Harbor. (TXF: "Piper Maru")
William Mulder and C.G.B. Spender later travelled to Pearl Harbor to interview a survivor of the Zeus Faber. (TXF: "Apocrypha")