 In response to crimes committed by U.S. servicemembers against Japanese citizens, such as the 1995 Okinawan rape incident, Japanese citizens and some Japanese government officials have questioned the equality of the Treaty of Mutual Cooperation and Security between the United States and Japan and the issue of responsibility and accountability by the U.S. government concerning the actions of its military members in Japan.In addition, the Japanese have questioned the U.S. commitment to safe operations of its military assets in light of several accidents, including aircraft crashes and other ship collisions that have injured or killed Japanese citizens.Acting on a request from the Japanese government, the state of Hawaii established a non-profit group, the "Ehime Maru" Memorial Association, on 11 November 2001, to coordinate the activities of placing an "Ehime Maru" memorial at a site in Hawaii.