The major employer in Seal Beach is the Boeing Company, employing roughly 2,000 people. Its facility was originally built to manufacture the second stage of the Saturn V rocket for NASA‘s Apollo manned space flight missions to the Moon and for the Skylab program. Boeing Homeland Security & Services (airport security, etc.) is based in Seal Beach and Boeing Space & Intelligence Systems (satellite systems and classified programs) is headquartered in Seal Beach. Boeing is the world’s largest satellite manufacturer.