Joint Base Andrews (JBA) is a US military joint-based facility located in Prince George's County, Maryland. Built in 1942, operated by the US Air Force and controlled by the Air Force District of Washington. The base is named after Lt. Gen. Frank Maxwell...

6903 ESS had several assignments in Pacific Security Region (USAF Security Service), 694 Intelligence Group, and Pacific Electronic Security Division. Stationed in Osan AB, South Korea in May 1970.