OV 10 This is Dong Ha airfield. Built in 1966 to provide another suppy line for the 3rd Marine Division, it replaced the original Dong Ha air strip and is designed to handle C 141s, C 130s and C 5s. It is the home of the 1st BDE 5th DIV Rotary Wing Detachment and the USAF Observation Detachment. This unit flies the OV 10 as seen here and provides control of close air support for the BDE.