The Friend or Foe System is designed to reduce accidental friendly fire incidents and enhance player immersion without relying on obtrusive HUD elements. Voice cues from the operators inform players of friendly presence in their location, aiming to maintain immersion while preventing unwanted player conflict.
Additionally, friendly faction players also have blue armbands to denote that they belong to the same faction as you. These armbas are reflective when viewed through night vision goggles.
Excersise safety first when deployed. Check the map, listen to the operator, and watch out for armbands before engaging to make sure your faction members are not harmed!