Photo Antenna Field: The antenna field of the 8th Radio Research Field Station, Camp Eagle, Phu Bai, Thua Thien Province, Military Region I, South Vietnam in 1971. Courtesy of Gary L. Roberts, 8th Radio Research Field Station, Phu Bai, Vienam. Courtesy of Gary L. Robert,s 8th Radio Research Field Station, Phu Bai, Vietnam.