Banshee wants you to return to Fort Narith in Gray Zone Warfare once more. He has heard rumors that the enemies operating there have been able to capture multiple jets, and he wants you to confirm this information by marking them all.
Jets N Marks | GUIDE | Gray Zone Warfare | All Factions
There are three jets that you need to find in Fort Narith. They should be relatively close to each other, making them easier to find than other items you need to find in Gray Zone Warfare. But the real trick is to get around the multiple guards protecting the location and make it out alive.
There are three jets that you need to track down in Fort Narith, and they are located close to the center of the base, heading south. You can find them in the Underground Bunker location, where the bunkers are carved into the hills. As you would expect, there are multiple NPCs patrolling this area and they are ready to defend these locations in Gray Zone Warfare. Before you leave, grab the three trackers that Banshee gives you from your post after accepting the mission. You can purchase more trackers if you lose them.
I recommend going from the east, from the Delta 1 landing zone. From here, go to the side entrance and go through the checkpoint. You will encounter several guards from this route, and they are heavily armed, with thick armor that makes them a real challenge to take out. You might be familiar with these NPCs if you worked on the Hacker and Neighborly Help missions.