The Trinity DMZ Mission Guide

In Call of Duty: Warzone DMZ, The Trinity is the final story mission for the Tier 4 Black Mous Faction. This mission tasks you to infiltrate Building 21 with a Geiger Counter to locate and extract Nuclear Fuel Rods from the facility.

The Trinity Mission DMZ

• Bring a Geiger Counter into Building 21.
• Use the Geiger Counter to find and take the 3 Nuclear Fuel Rods.
• Extract the 3 Nuclear Fuel Rods in one deployment.

How to bring a Geiger Counter into Building 21

First and foremost, you need to acquire the Geiger Counter tactical from the Ashika Island or Al Mazrah maps. You can get this equipment by securing one from the toolbox assigned to you during the Secure Nuclear Material contract. Extract from the map after you've acquired and equipped the Geiger Counter as your tactical.

You then need to deploy into the Building 21 map using the DRC Building 21 Access Card, which can be obtained from shops and supply drops. Once you have visited the secure facility carrying a Geiger Counter in your loadout, the first task will be checked off and you will not have to bring the tactical again if you fail to complete the mission in the current match. Below we have listed the exact locations of the three Nuclear Fuel Rods so that you can get them easily.

First Nuclear Fuel Rod Location

Make your way to the Garage section on the first floor of Building 21. Locate the yellow cargo trucks near the C1 stairwell doors. The Nuclear Fuel Rod should be placed in the back of the truck shown in the images above. If it's not there, probably an enemy team got to it before you. You'll then have to take them out and claim their loot.

Related: Delivery Problem DMZ Mission Guide

Second Nuclear Fuel Rod Location

On the second floor of the facility, enter the Restaurant directly in front of the D2 stairwell doors. Turn left and enter the section marked in the second image. The Nuclear Fuel Rod should be present in the first stall of the restroom.

Third Nuclear Fuel Rod Location

Access the third floor, preferably from the A3 stairwell doors, and make your way to the Core Lab area. Keep in mind that the third-level doors only unlock after LPCON Charlie or the 11-minute mark. Also, beware of the Wheelson guard bot roaming around the floor. Take a left from A3, walk down the corridor, and turn right into the hallway as shown in the second picture.

Enter through the first door to your left and you'll find yourself in front of a laboratory with a giant glass panel. Break the glass, enter the room, and grab the Nuclear Fuel Rod placed on top of the corner desk. Finally, extract all three rods you've collected using an elevator exfil to complete The Trinity mission in DMZ.

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