Anti Air Emplacement S Rank?

[gasoline guzzler]

This is the only mission I can't s rank on normal and hard, pls help

[﷽ DavidLonglivelle]

Just don't get spotted, try to take enemy rocket launcher, destroy 3 AA guns it doesn't matter if you use C4 or rocket launcher, then call chopper to LZ near the starting point, get ready for APC from the west exit road and shoot it with rocket launcher 3 time.

[LegendarySnakeV]

https://www.youtube.com/watch?v=KVQZZct9rCI

Watch this video! :)

[gasoline guzzler]

Thanks! Just S ranked normal and hard. Helped so much thank you!