Mission 4 C2W

For the super-duper quick S-Rank, you'll need to do some pre-mission recon first. Go to Free Roam Mode and disable the Anti-Air Radar at the Eastern Communications Post. This will open up an LZ directly at the ECP. Once that's done, do the following: Redo the mission and choose the Eastern Communications Post as the landing site. When the chopper gets near the ECP, equip the chopper minigun and shoot all three satellite dishes at the outpost If done correctly, all three satellites will be blown up and you can leave the hot zone in under 2 minutes and get the S-Rank without even stepping foot on the ground