Usacap Johnston Atoll

• Strategic Location: Johnston Atoll is a remote island located about 750 miles southwest of Hawaii in the North Pacific Ocean, making it a vital strategic outpost for the US military since World War II. • Early Military Use: The U.S. Navy began using Johnston Atoll as an airbase and seaplane refueling station in the late 1930s, and it played a role in World War II as a refueling and staging area. • USACAP Overview: "USACAP" stands for United States Army Chemical Activity Pacific, which managed the storage and destruction of chemical weapons at Johnston Atoll from the 1970s until the early 2000s. • Agent Orange Storage: In the 1970s, Agent Orange, a toxic herbicide used in the Vietnam War, was stored at Johnston Atoll before being incinerated at sea during Operation Pacer IVY. • Johnston Atoll Chemical Agent Disposal System (JACADS): JACADS was the first full-scale chemical weapons destruction facility in the world, operating from 1990 to 2000 and destroying thousands of tons of nerve and blister agents. • Nuclear Testing: The atoll was used for several high-altitude nuclear tests during the 1950s and 1960s, most notably as part of Operation Hardtack and Operation Dominic. • Missile Defense Testing: Johnston Atoll served as a launch site for anti-ballistic missile testing and satellite tracking during the Cold War. • Environmental Cleanup: After the closure of military activities, extensive cleanup and decontamination efforts were conducted to address chemical, radioactive, and hazardous waste left on the island. • Endangered Wildlife Sanctuary: The atoll is now a National Wildlife Refuge, hosting endangered seabirds, turtles, and coral ecosystems, protected by the U.S. Fish and Wildlife Service. • Closure and Demolition: USACAP and all military personnel departed by 2004; almost all structures were demolished, and access is now strictly controlled to preserve the site's environmental recovery.