Summary: Over the next four years, approximately 30,000 Marines and their families will move to the small island of Guam, nearly tripling its presence there.<br><br> It's part of a larger agreement that the U.S. signed with Japan to realign American forces in the Pacific, but how will this multi-billion dollar move impact the lives and lifestyle of Guam's nearly 200,000 residents?<br><br> This week, NOW on PBS travels to the U.S. territory of Guam to find out whether their environment and infrastructure can support such a large and quick infusion of people, and why the buildup is vital to our national security.
