Hidden in the safe

Fang and Korn are heading to the Central Pripyat kindergarten to open the safe. You must not let Korn die.
==Walkthrough==
A few mutants will spawn due to triggers in the previous quest. You can exit the kindergarten to take them out before your buddies get there, as advised in Radioman's stash.
Escort the two of them up to the room. Korn opens the safe, but it's empty. Korn says that there were the documents there, but Maximilian took them.
Talk to Fang. He's cautious and advises you to set the mines you found in the rucksack, for your own safety. You may or may not want do it, but after a couple minutes talk to Fang again. He interrogated Korn before and found out that other isomorphs are in the Red Forest, but it's unknown where exactly.
After the talk, 4 Monolithians will attack the kindergarten.
Head to Red Forest to speak to the newly-arrived NPC named Forester in the [ old mineshaft], and take on Sniper's duel.
==Notes==
* You don't need to set the mines, but Monolithians will close in on the location after your conversation regardless.
* Korn carries an LR-300ML with a Schmidt&Bender scope attachment that can be bought from him.
==Bugs==
* If Korn dies in the Monolithian ambush, dialogue plays as if the safe hasn't been opened yet. The task can't fail as it's already been completed, but you should reload and keep him alive just in case.