My step dad plays this game a likes it. He has used the walk though and it has worked. But right now he is stuck at the part where you have to ignite the smoke to signal the air strike.

He can't seem to find where is the right place to do it is so the bad guys dont see you.

Please help!!!!

Here's the answer:

Cross the bridge ( I assume that the Second Squad of random allies destroyed the blockades) then, run across the dirt road to the center, where the road turns right towards the gate. You'll see a dead body, and the "red action icon" and you just press X. That's how to ignite the strike. Watch out though, you'll die if you don't take cover, and get your allies to a safe place too. There's a tank near blockades in front of you, so watch out. It'll get destroyed by the air strike.