On August 13, 2004. U.S. Marines invaded and occupied a large section of the Okinawa International University campus after a CH-53D Sea Stallion heavy assault transport helicopter crashed into the OIU Administration Building.
The investigation into the cause of this accident has not been completed, but the U.S. Marines have already resumed flights of all aircraft, including the CH-53Ds. We regard the reckless endangerment of civilian lives as an extremely grave matter. Therefore, faculty and friends of Okinawa International University have declared the OIU campus a military No Fly Zone. All incursions by military aircraft into the OIU No Fly Zone will heretofore be regarded as hostile actions. Any powering up of radar facilities at M.C.A.S. Futenma will also be regarded as hostile intent. All military organizations in Okinawa are hereby forewarned: