OnTriggerEnter is triggering from colliders on child objects

I have an enemy game object. It has the parent object with a capsule collider to detect if something comes in weapon range and I have a child object with another much larger collider to act as a sight radius. The problem comes up with something enters the child's collider and the script attached to the parent triggers as if its collider was entered. Will OnTriggerEnter always detect collisions on all child objects?

Here is the code I have for the parent.

     void OnTriggerEnter(Collider other)
         {
             if (other.gameObject.tag == "Unit")
             {
                 meleeTargets.Add(other.gameObject);
                 inMelee = true;
             }
         }