Call of PripyatEdit
Gaiduk is the squad leader of a squad of Freedom stalkers who are tasked with defending the Duty warehouse, due to Morgan tipping Loki off to cover his tracks. He is perched on the top of the trailer in the warehouse's area, providing overwatch.
If the player gives Morgan's PDA to Freedom, Loki will send Kremen and his squad to help Gaiduk hold the warehouses. There is a slight chance that Gaiduk may be killed in the firefight, but his death will not affect the mission's progress in any way.