Anti-Aircraft Sites are FND flak posts that shoot down any aircraft flying over their patch of Yara. Destroying them opens the sky for flying and Air Drop, and they are your main source of Depleted Uranium for Supremos and Resolver weapons.
Each site is built around an oversized framed anti-aircraft gun, styled on the twin-barrel ZU-23, with two shoulder-fired missile launchers beside it. FND troops guard the position, and Depleted Uranium is stored on site.
Never fly straight at one. You get a radio warning, then the guns shoot you down. Arrive on the ground, scout and tag the guards, then wreck the gun. One hit from an explosive weapon is usually enough, or two to three grenades.
Each site gives Depleted Uranium, which buys Supremo backpacks and Resolver weapons. Clearing one also frees the airspace around it, so you can fly and Air Drop there.
During Insurgencies after the story, FND Remnants can retake sites. You can destroy them again, but you can never return one to the FND. Pi, Phi and Psi have similar names, so check the letter on the map.
Anti-Aircraft Site DeltaAnti-Aircraft Site Delta is an FND flak post in Barrial, Valle De Oro. It stands close to Orquídea Villa, so clearing it opens the sky around the villa too. Destroying it also gets you Depleted Uranium.
Anti-Aircraft Site MuAnti-Aircraft Site Mu is an FND flak post in Barrial, Valle De Oro. It shields the Biovida Lab Facilities in Barrial, which makes it worth hitting before any work in that area. Destroying it also gets you Depleted Uranium.
Anti-Aircraft Site SigmaAnti-Aircraft Site Sigma is an FND flak post in Barrial, Valle De Oro. Wreck the gun to fly safely over this part of Valle De Oro and pick up the Depleted Uranium stored at the site.
Anti-Aircraft Site UpsilonAnti-Aircraft Site Upsilon is an FND flak post in Barrial, Valle De Oro. It is the most northerly anti-aircraft site on the four mainland regions. Destroying it also gets you Depleted Uranium.Valle De Oro
Valle De Oro is Yara's central region and home to Máximas Matanzas, the rebel crew led by Bicho. María Marquessa and Édgar Reyes run it for the regime.
El Este
El Este is Yara's eastern region, a wild stretch of jungle and mountains. It is where you recruit the Legends of '67 and La Moral, and Admiral Benítez and Sean McKay hold it for the regime.
Madrugada
Madrugada is Yara's western region: tobacco farms, coast and the Montero family's home. José Castillo's air force runs it, so expect heavy anti-aircraft cover when you try to fly here.
Image: UbisoftBarrial
Barrial is Valle De Oro's northern coastal province, east of Esperanza. It hosts the FND Special Forces Base and four anti-aircraft sites, so it is a tough area to fly over.