T. Mayo Britt

**SISS ZULU** was a US Navy Shore Intercept Site located at Zeto Point on Adak Island, Alaska, established during the Cold War. The site was part of the larger Adak Naval Complex and operated under the Naval Security Group, with the mission of signals intelligence (SIGINT) collection and monitoring Soviet military activity in the North Pacific region. Known as “ZULU Site,” the facility played a crucial role in electronic surveillance, support of fleet operations, and early warning during periods of heightened tension with the Soviet Union. SISS ZULU was decommissioned in the 1990s as geopolitical circumstances changed and technology advanced, but it remains a testament to the strategic importance of Adak in US military history.

The Naval Security Group Vietnam (NSG Vietnam) was a specialized unit of the U.S. Navy tasked with signals intelligence (SIGINT) and communications security during the Vietnam War. Established in 1966, NSG Vietnam operated from several sites, including Danang and Saigon, and supported naval operations with critical intelligence on enemy communications and movements. The unit worked closely with other American and allied intelligence organizations, providing real-time information that aided in both tactical and strategic decision-making. NSG Vietnam played an essential role until the U.S. withdrawal, with its mission concluding in 1973 as American forces left South Vietnam.

The Commander in Chief, U.S. Pacific Fleet (CINCPACFLT), headquartered at Pearl Harbor, Hawaii, has served as the principal naval force in the Pacific Ocean since its establishment in 1941. CINCPACFLT played a pivotal role during World War II, leading U.S. naval operations across the Pacific theater, including the critical battles of Midway, Coral Sea, and Leyte Gulf. Throughout the Cold War and into the 21st century, the command has overseen deterrence, crisis response, and maritime security operations, adapting to new challenges in the Indo-Pacific region. Today, as U.S. Pacific Fleet, it remains the world’s largest fleet command, ensuring regional stability and forward naval presence from its historic headquarters at Pearl Harbor.