Article 1: Purpose and Objectives The Government of the United States of America and the European Partners shall engage in a cooperative programme concerning an integrated space transportation and orbital system to provide: (1) for the design, development, manufacture and delivery of the first flight unit of the SL as an element to be integrated with the Space Shuttle; (2) for the use of the Space Shuttle and SL systems for peaceful purposes; (3) for the production and procurement of additional SLs; (4) for appropriate exchanges and interaction in the development and use of the Space Shuttle and SL systems; and (5) for consideration of the timely expansion and extension of this cooperation as their mutual interest warrants.