The Oklahoma City National Memorial is an affiliated site of the National Park Service. The Outdoor Symbolic Memorial grounds and the Memorial Museum are owned and operated by the Oklahoma City National Memorial and Museum. The National Park Service entered into a cooperative agreement with the Memorial and Museum, a testament to the national significance and importance of the memorial to the United States of America. The National Park Service's role at the Oklahoma City National Memorial is to provide interpretation of the Outdoor Symbolic Memorial. Joining the efforts of the Memorial Museum and the National Park Service is the Memorial Institute for the Prevention of Terrorism.