Article 5: Obligations of the Government of the United States of America As its part of the cooperative programme the Government of the United States of America shall have among its obligations the following: (1) to provide relevant information and advice; (2) to provide, subject to its availability and applicable United States laws and regulations, such assistance and for export of such technology, including know-how and hardware, as may be mutually agreed is required for the development and manufacture of the SL; (3) to procure only from the European Partners such additional SLs, components and spares as substantially duplicate the design and capabilities of the first SL, as are needed by the Government of the United States of America, including needs arising from its international programmes, and as are available in accordance with agreed schedules and at reasonable prices; (4) to refrain from separate and independent development of any SL substantially duplicating the design and capabilities of the first SL unless the European Partners fail to produce such SLs, components and spares in accordance with agreed specifications and schedules and at reasonable prices; (5) to use the first SL developed in Europe as an element integrated with the Space Shuttle system for the peaceful exploration and use of outer space; and (6) to keep the European Partners informed of its plans for future use of the Space Shuttle system, and, in particular, of future concepts which may lead to modifications of the present SL concept, with a view to expanding and extending this cooperation beyond the present Agreement.