I was there too. 49th. FMS engines. Spent time on the perimeter with the cops taking smoke breaks off the flightline. Did some TDYs "in country" to recover broken jets. Was at Bien Hoa one time when they got hit hard with mortars and rockets. No US troops killed but three ARVN were killed. I remember the DDT being sprayed. Our hooch was right next to a road and the spray came right in. Bunch of us got sick. I came down with an "unidentified" eye infection while there. Would you believe that infection came back every year for at least four years in a row? No one could identify it. And yes, VA will not accept classified orders.