The Niʻihau incident occurred on December 7–13, 1941, when Imperial Japanese Navy Air Service pilot crash-landed his Zero on the Hawaiian island of Niʻihau after participating in the attack on Pearl Harbor. The Imperial Japanese Navy had designated Niʻihau as an uninhabited island for damaged aircraft to land and await rescue. Native Hawaiians, unaware of the attack, treated Nishikaichi as a guest but took the precaution of removing his weapons. They brought a resident who had been born in Japan to translate. That night, the Hawaiians learned of the Pearl Harbor attack and apprehended the Japanese pilot. They allowed him to stay with the Haradas, the only two other residents of Japanese descent, but posted guards. The pilot then told the Haradas about the attack and the two agreed to help him. Nishikaichi and Yoshio Harada overcame a guard and escaped to destroy the plane and papers, then took Niihauans Benehakaka "Ben" Kanahele and his wife Kealoha "Ella" Kanahele prisoner. The Kanaheles later overcame the guard and eventually killed the pilot. Ben Kanahele was wounded in the process, and one of Nishikaichi's collaborators, Yoshio Harada, committed suicide. Ben Kanahele was decorated for his action because he was wounded. Ella Kanahele, who killed Nishikaichi, received no official recognition. Background Niʻihau, the westernmost and second smallest of the primary Hawaiian Islands, has been privately owned by the Robinsons, a white kamaʻaina family, since 1864. At the time of the incident, it had 136 inhabitants, almost all of whom were Native Hawaiians whose first language was Hawaiian. In 1941 the owner was Aylmer Robinson, a Harvard University graduate who was fluent in Hawaiian. Robinson ran the island without interference from any government authority, and although he lived on the nearby island of Kauaʻi, he made weekly visits by boat to Niʻihau. The island was accessible only with Robinson’s permission, which was almost never given except to friends or relatives of Niihauans. The handful of non-Native residents included three of Japanese ancestry: Ishimatsu Shintani, a first-generation immigrant from Japan (Issei) and Hawaiian-born Nisei Yoshio Harada and his wife Irene Harada (an Issei), all of whom were involved in the incident. Prior to the Pearl Harbor attack, the Imperial Japanese Navy had designated Niʻihau, mistakenly believed to be uninhabited, as a location for aircraft damaged in the attack to land. Pilots were told they could wait on the island until they were rescued by submarine.