Amphibious warfare is treacherous ; moving a military force from sea to land can turn mistakes into disasters. As the US military begins to focus its attention on the Asia-Pacific region, an area of increasing military tension and territorial disputes, the Marine Corps is being called upon to return to its roots in amphibious assault. VICE News visited RIMPAC, the world’s largest maritime warfare exercise, to see how the Marine Corps is testing new technologies and tactics to face the new challenges of amphibious warfare and remain the world’s preeminent amphibious force in the future.