Hi Juggernautb. You need to get closer to the gate but not too close as you allready know. I think it is about 17 k from the gate and the gate will kill the coalition forces. Then u can move on.Good luck pilot.
When you are close enough gate kills coalition forces allmost instantly. It's been a while since i played this part, so it might be closer.Just move a little bit everytime towards the gate. You should be able to see coalition forces on the scanner.