Banshee has one more task for you in Gray Zone Warfare and wants you to return to the Sawmill. Now that you know the group has explosives, he wants you to go out of your way to steal them and find the detonators.
EOD Quest Guide | Gray Zone Warfare
These detonators are located in a different place than you can reach in GZW. They are a valuable item that the enemy group at the Sawmill wants to protect, and they will have it under lock and key. You need to be prepared to find a specific key that you can use at the Sawmill and find the right door to get in.
The location where you can find the detonators is in the Sawmill offices. The key you need is the Sawmill Key, which has a chance to drop from one of the NPCs that you can find throughout the area in GZW. Like other keys that you had to find for quests, it can take a while to find them, as there is a high chance that they will drop and end up in the inventory of one of these NPCs.
Your goal is to reach the south side of the Sawmill and make your way to the center. The offices you were in for the Invaders From Afar quest are close to this location, but further back where you attempted to take out the enemy leader for the Timber quest. These offices should be open, but when you attempt to enter the back room, you'll need the key from one of the NPCs. Again, finding the key can take some time and you may have to wait for the NPCs in the area to respawn.
