Missing sergeant

Kuznetsov is asking you to look for a sergeant who went missing recently.
== Walkthrough ==
The sergeant can be found at the Radar, having been recruited into Monolith. Unlike other Monolithians, he will not shoot at you. You can either kill him or talk to him and tell him to leave Monolith, but the best outcome would be convincing him to return home.
The sergeant will spawn once you enter Radar the first time, during Shut down the Brain Scorcher. He always spawns with a black balaclava over his face, so any non-balaclava Monolith you encounter on Radar is safe to kill. Otherwise there's no way to tell him from other balaclava-wearing Monolithians, and it's really easy to kill him accidentally. If you loot an Army ID tag from a body, it was him.
The sergeant is using an LR-300 and will drop it if killed.
Here are all possible spawn spots:
== Notes ==
* You can take the quest before or after finding Zvyagintsev, the order doesn't matter.
== Bugs ==