Photo: Security Platoon HQ of the 165th Combat Aviation Group, 210th Combat Aviation Battalion, of the 1st Aviation Brigade, Long Thanh (North) Army Airfield, Long Thanh District, Bien Hoa Province, Military Region III, Vietnam in 1971. SP/4 Steve Postier, Security Platoon of the 165th Combat Aviation Group, 210th Combat Aviation Battalion, of the 1st Aviation Brigade, 1970-1971.