; (2) includes capability driven milestones and timelines leading to such a transition; (3) takes into account the importance of maintaining workforce expertise, core capabilities and continuity at National Aeronautics and Space Administration centers, including those primarily focused on human spaceflight; (4) considers how any such transition affects current partnerships; (5) presents opportunities for future engagement with— (A) current international partners; (B) countries with growing spaceflight capabilities, where not precluded by other provisions of law; (C) private sector; and (D) other United States Government users; and (6) promotes the continued economic development of low-Earth orbit.