The two governments, on the basis of their respective policies, will maintain, under normal circumstances, close cooperation to defend Japan and create a more stable international security environment. (a) Japan will have primary responsibility for taking immediate action and repelling an armed attack on Japan as soon as possible. The United States will provide adequate support to Japan. Such bilateral cooperation may vary depending on the scale, nature, phase and other factors of the armed attack. This cooperation may include the preparation and implementation of coordinated bilateral operations, measures to prevent further deterioration of the situation, monitoring and exchange of information. (b) in conducting bilateral operations, the U.S. Armed Forces and Self-Defense Forces will coordinate their respective defence capabilities, use them in a timely and effective manner. In doing so, they will conduct effective joint operations between the land, sea and air services of their respective armed forces. Self-defense forces will primarily conduct defence operations on Japanese territory and its surrounding waters and in airspace, while U.S. forces will support the operations of the self-defense forces. U.S. forces will also conduct operations to complement the capabilities of the self-defense forces.
c) The United States will put in place reinforcements in due course and Japan will create and maintain the necessary bases to facilitate these operations. According to a 2007 Survey by the Okinawa Times, 73.4% of Japanese believed that the mutual security contract with the United States and the presence of U.S. forces.  The two governments will establish common standards under normal circumstances for japan`s unwanted preparation. These standards will address issues such as intelligence services, unit activities, movements and logistical support at all stages of preparation. If an armed attack on Japan is imminent, the two governments will agree to choose a common guard stage that will be reflected in the level of readiness for Japan`s defense by U.S. forces, self-defense forces and other relevant authorities. c) Communication and electronics Both governments will support each other to ensure the effective use of communication and electronics capabilities. The coordination procedures will be different depending on which agencies to coordinate and which agencies to involve.
They may include coordination committee meetings, mutual detachment of liaison officers and contact points designation. Under such a bilateral coordination mechanism, the U.S. armed forces and self-defense forces will, under normal circumstances, prepare a bilateral coordination centre with the necessary equipment and software to coordinate their respective activities. Bilateral action in response to an armed attack on Japan remains a central aspect of U.S.-Japan inter-defence cooperation. (b) amendments to this agreement are made with the mutual written agreement of the parties and come into effect on the date of the signing of this agreement. Bilateral defence planning and mutual cooperation planning will take into account several possible situations, pending the due consideration of the results of these efforts in the plans of both governments. Both governments will coordinate and adapt their plans in light of the real circumstances.