Then come to the other side of the building roof

and switch out the sniper rifle to cover the friendly forces on the street
Squat behind the bunker, don't play exciting, the enemy is not vegetarian. In addition to the street, there will be enemies on the left side of the building, and after the friendly forces pass safely a large number of enemies will come from the street, it's time to run for your life. Follow your teammates to another street area, through a very characteristic building of this country, there are some enemies inside, but the threat is not big. After coming out of the building you can see the marines that need to be rescued, but a bomb was found under a nearby car. Follow the red wire to the source of the bomb, unplug the wire on the switch after being raided by the enemy, follow the prompts button to kill the enemy, unplug the second wire and return to the street just now.