This quest will become available only after completing the side quest Shock Therapy in S.T.A.L.K.E.R. 2: Heart of Chornobyl, in which you need to find and eliminate the Varta fugitives. We will explain how to find and switch all the power supply panels in the warehouse, and give tips on how to defeat the burer waiting for you inside the service station.
On the second floor of the building, you will find the technician — Sergeant Yeremeyev. Go upstairs and talk to him to learn the details of the job and take on the task.
After a short dialogue, the first thing you need to do is head to the warehouse by the marker — the loading station located northwest of the base. Upon arrival, press the red button near the warehouse gates, after which three new markers with the locations of all the panels will appear on your compass.
The order of switching the panels does not matter. The first panel (left) is located immediately behind the hero, on the wall of a small building.
The second panel (central) is located behind a fence, directly opposite the first. It will be slightly hidden, but it is still easy to find if you carefully inspect the area.
The third panel (right) is found in the building with a staircase in the same area. Be careful: when you approach the building, tushkans will start descending the stairs. The main difficulty in fighting them is their high movement speed. Eliminate the mutants, then go up to the second floor of the building and activate the last panel.
Now return to the door where you pressed the red button and open it. Inside, you will encounter a burer — a mutant capable of ripping weapons right out of the protagonist's hands. With a few precise shotgun shots, you will surely defeat him.
Climb the stairs on the left, enter the farthest room, and take the suitcase with the parts, which is on the windowsill of the broken window. On the left side, on a shelf inside the safe, you will find several bandages, vodka, and a medkit — useful items that may come in handy later.
Return to the sergeant and tell him about the mutant. The technician will promise to create a psi-suit, which you can buy for 4000 coupons, while completing the story quest Through Hardships to the Stars.