On June 3, 2004, thirteen of the United States' premier space advocacy groups, industry associations and space policy organizations teamed up to form an umbrella organization known as the Space Exploration Alliance. The primary purpose of the SEA is to support the White House's plan to refocus NASA's human space activities toward exploration beyond low Earth orbit. The organizations involved in supporting the Space Exploration Alliance include: Collectively these groups total almost one million Americans as members or as employees of member companies.