After you bring down the Corpo AV, you will begin the Life During Wartime mission. This involves trying to get close enough to the site of the crash turn off the rocket turret that is on the AV’s roof. This mission can be played out a couple of different ways, depending on your build.
The first, and most important, thing to know is that the control panel for the turret is on the far side of the AV. There are five robot guards, a combat drone, and the turret itself to deal with.
If you are lucky you will have built into hacking a bit and have access to the System Shock Quickhack. First, scan all the enemies from the outcropping of rock before you drop down. If you can System Shock the combat drone, then do so. You will need to hit it twice to kill it, but the other robots won’t react. The turret itself has two unhackable cameras on the roof, which you cannot do anything about, so make sure you hide from them and cut your lines of sight.
Slowly move around the area, using System Shock to deal with each of the guards. When they are all down, make your way to the panel, jack in, and turn it off.
If you need to fight your way in, we would suggest opening your inventory and working from range. Grab a Sniper Rifle if you have one, and pick everything off one by one. You won’t need to worry about reinforcements, nobody is coming to save these enemies.
Stealth is another good option if you have the stats for it. You can make your way around all the robots, picking them off one by one, but the combat drone will need to be taken out by either a weapon or hacking. Just be very careful of your lines of sight, because those turret cameras will track you down. The worst approach is a straight-up frontal assault because the turrets will be firing missiles at you that do a lot of damage on direct impact.