How to assault a village with helicopters

[void1984]

Hi

I am playing USMC Vietnam campaign.
I am supposed to take a village with a helicopter ride. In 15 turns, so I can't land at the distance.
What should I do to land there successfully?
When I approach I don't fear AA guns, because they fire from far away with 5-7% chance to hit. My problem is infantry and snipers. When I fly I can't see them and then they fire from 50m and always hit me. I have no idea how I can evade them.