[Hellfighter]

sorry but thats one mad chopper hit and run really fast may the speed that is set is to high on the move try to set the speed lower

it move in for the kill real fast at this point making the kill its i think it slow down after it done killing off go back to moving super fast again check whats the speed it is set at in the map editor then play with it try to set it lower setting for movement
it follow the way point at a set speed.also too much fog can do the same thing as hard to see it think as this way the fog is as high as the hilltop if the chopper go higher then the hills it can't be seen.