In 2007, the US Department of Defense announced that 4,000 marines stationed in Okinawa, Japan would be relocated to Guam, a process requiring considerable construction, air and sea traffic, and infrastructure upgrades. In response, the Micronesia Chief Executives and the Regional Invasive Species Council (RISC) raised special concerns about the movement of invasive plant and animal species with the build-up and relocation. Species that are not naturally found in a place, and that have negative biological, economic, social, or cultural impacts, are known as “invasive” and pose a longstanding threat in a region that relies on inter-island and international interchange. They are often transported unintentionally from place to place, such as insects that make their way to an island in a shipment of soil. Other species are brought intentionally – as pets, for agricultural crops, or simply for ornamental decoration. To better prepare for the military relocation, the RISC partnered with representatives from various countries at the federal, national, territory, and commonwealth levels, as well as industry and NGOs to prepare the first Regional Biosecurity Plan (RBP) for Micronesia and Hawaiʻi, which was released in 2015. Funded and supported by the US Navy, the comprehensive plan consists of four volumes and covers Hawaiʻi, Guam, the Commonwealth of the Northern Mariana Islands, the Federated States of Micronesia, Palau, and the Republic of the Marshall Islands.