Mr. Masahisa Sato, a member of the House of Councilors, emphasizes at the Defense Committee of the Upper House; deployment of Osprey is essential in defending Japan's territories in the southwestern waters of Japan, considering its combat range from Kadena Air Base, Okinawa, Japan. China is the only nation that opposes the deployment of Osprey in Okinawa, Japan because of its high maneuverability. Japan's defense forces should do the same.