Station HYPO

This after action report (AAR) provides great examples how radio intelligence provided indications and warning (I&W) to task force commanders during WWII. Throughout the report designators 8600J, 5135J and 5715J are mentioned. These designators were used to identify communications links, nets and networks that aided the intercept operators in managing the tasking, collection and exploitation of Japanese radio communication circuits.  At the end of this report list the Japanese language officers, there assignment to each of Task Force/Group and where they received the language training.  Although there were enlisted Japanese Kana Kata intercept operators on each of the ships, none are listed.

The U.S. Naval Security Group Detachment Shemya, AK, with part time Communications Technician (CT) personnel TAD from NSG Dept, NCS Adak, AK, was officially established in 1963. In 1965, the Detachment shifted to full time activation, with its own complement of CT’s. Sometime, shortly after 1968, NSG Det Shemya disestablished and closed. All personnel, assets, mission and functions were transferred to NSG Dept, NCS Adak.

While assigned to Detachment A, NAVFAC Danang, with Company L, Marine Support Battalion, both men were killed when their CH-46 helicopter crashed in Quang Nam Province, Vietnam. CTC Gates remains the only U.S. Navy cryptologist whose name appears on the Vietnam Veterans Memorial Wall. MGySgt Storm is honored alongside ten other Marine cryptologists from the 1st Radio Battalion who were killed in action in Vietnam and whose names are also inscribed on the Wall.

Vice Admiral Russell Willson
United States Navy
December 27, 1883 – June 6, 1948

Snell’s Law, also known as the law of refraction, describes how light rays change direction when they pass through the boundary between two different transparent media, such as air and glass. The law is named after the Dutch scientist Willebrord Snellius, who first formulated it in 1621.