In episode four of NATO's Road to Madrid, Rachel is joined by two leading voices on space security issues from two sides of the Atlantic: Kaitlyn Johnson, Deputy Director and Fellow of the CSIS Aerospace Security Project, and Andrea Rotter, Head of Division for Foreign and Security Policy at the Hanns Seidel Foundation, a think tank in Munich. Rachel, Kaitlyn, and Andrea explain why space is so important to our daily lives and militaries, as well as how NATO's space-based capabilities could be threatened—both by adversary capabilities and by a lack of clear international norms for military conduct. They conclude by discussing how NATO might (and should) respond at the Summit in Madrid and in the new Strategic Concept.