What technology was present during Vietnam?

Answer 1

The helicopter launched TOW anti-tank missile was first used in Vietnam, in 1972 during the NVA's Easter Offensive; The TOW (Tube Launched Optically Tracked) missile destroyed 24 NVA tanks (PT76 & T54/55) in May 1972. UAV's (Unmanned Aerial Vehicles) were flown over North Vietnam during reconnaissance missions. North Vietnamese Air Force MIGs would shoot them down for aerial target practice. As late as the 1980's, one of those pilots was still trying to have one of his UAV aerial kills credited to him, for ACE status. An aerial kill, that has consistently been denied for credit, since it wasn't a manned aircraft.