There is a total of 6 conveyor belts that can be used for extracting chests with various loot from the police armory. You can exchange police cards for chests at the nearby terminal. Please note that there is a limited amount of attempts. Some of the conveyor belts are faulty and can be fixed with a certain amount of spare parts. Fix the it once to be able to get more loot chests daily.
Last Day on Earth: Survival Game GUIDE