In MW4 DMZ, the Radiation Station challenge involves finding a fire station, obtaining three gas masks or radiation pill bottles, and inspecting five containers in a radiation area. It is possible to complete all three targets in one game if you thoroughly search the fire station and prepare for the final objective.
Locate a Fire Station

To begin, look for the fire station symbol on your map after joining a match in any game mode. Fire stations are available in almost all major cities, giving you ample opportunities to get ready for this challenge.
Loot 3 Gas Masks or Radiation Pill Bottles

After you arrive at the fire station, inspect the whole building for gas masks and radiation pill bottles. These two items can commonly be found in fire stations, meaning they shouldn’t be hard to collect.

Begin by looking around the first floor, including lockers and other areas before going upstairs. Don’t forget about the medical crates that are mounted on the wall; be sure to check those as well. Keep looking inside the building until you find three gas masks or radiation pill bottles. If you can find any spares, use them before going to the next objective.
Search 5 Containers in a Radiation Area
Once you have gathered all the items you need, go into a radiation area and look for five containers to finish the last objective. If you’ve already gained the gas masks or radiation pills from the fire station, make use of them here as well. The last objective can be completed in the same match as the previous two tasks, which allows you to complete the entire Radiation Station challenge in a single game round in MW4 DMZ.

