This mod was created with the propose of Faction war zone wich every faction want to conquer camps with the option to player join\leave a faction, an improved AI, bring Clear Sky faction from S.t.a.l.k.e.r.: Clear Sky and another features.
Contracted Mercenaries (aka Ecologist Mercs or Eco-mercs) will be guarding Yantar Ecologist Mobile "Bunker", randomly, you might meet Ecologist Teams (Leaded by Green SPP9) excorted by Ecologist Personal (Green SPP9, Ecologist Stalkers, etc) or by Contracted Mercs also it is possible to meet Mercenary "Research" Teams (Leaded by Mercenary Blue SPP suit and excorted by Mercenary Personal)
he dont seem to happy with you
from this point he looks like holder of jedi sword that doesn't works)))
I thought the mercs were attacking the ecologists in soc.