Naval Communications Station Philippines (NPO)

The Naval Communications Station Philippines (NPO) was a critical United States Navy communications facility established in the Philippines, primarily located at San Miguel, Zambales. Commissioned in the 1950s during the height of the Cold War, NPO provided vital communications and intelligence support for U.S. and allied naval operations throughout the Western Pacific and Southeast Asia, including during the Vietnam War. The station operated advanced radio, satellite, and cryptographic equipment to ensure secure and reliable command and control. Following the expiration of U.S. basing agreements, the facility was transferred to the Philippine government in 1991, marking the end of its key role in regional military communications.