Article 12 Transportation 1. Each of the Partners shall have the right of access to the Space Station using its respective government and private sector space transportation systems, if they are compatible with the Space Station. The United States, Russia, the European Partner, and Japan, through their respective Cooperating Agencies, shall make available launch and return transportation services for the Space Station (using such space transportation systems as the U.S. Space Shuttle, the Russian Proton and Soyuz, the European Ariane-5, and the Japanese H-II). Initially, the U.S. and Russian space transportation systems will be used to provide launch and return transportation services for the Space Station and, in addition, the other space transportation systems will be used as those systems become available. Access and launch and return transportation services shall be in accordance with the provisions of the relevant MOUs and implementing arrangements. 2. Those Partners providing launch and return transportation services to other Partners and their respective users on a reimbursable or other basis shall provide such services consistent with conditions specified in the relevant MOUs and implementing arrangements. Those Partners providing launch and return transportation services on a reimbursable basis shall provide such services to any other partner or the users of such other Partner. Partners shall use their best efforts to accommodate proposed requirements and flight schedules of the other partners. 3. The United States, through NASA, working with the other Partners' Cooperating Agencies in management bodies, shall plan and coordinate launch and return transportation services for the Space Station in accordance with the integrated traffic planning process, as provided in the MOUs and implementing arrangements. 4. Each Partner shall respect the proprietary rights in and the confidentiality of appropriately marked data and goods to be transported on its space transportation system.