Enemy Pathing

I have the following script for the enemies in my game. The problem is, they will mesh with each other when following. How do you get them to keep a certain distance away from each other?

var target : Transform; //the enemy's target

var moveSpeed = 3; //move speed

var rotationSpeed = 3; //speed of turning

var attackThreshold = 3; // distance within which to attack

var chaseThreshold = 10; // distance within which to start chasing

var giveUpThreshold = 20; // distance beyond which AI gives up

var attackRepeatTime = 1; // delay between attacks when within range

     private var chasing = false;
     private var attackTime = Time.time;
      
     var myTransform : Transform; //current transform data of this enemy
      
     function Awake()
     {
     myTransform = transform; //cache transform data for easy access/preformance
     }
      
     function Start()
     {
     target = GameObject.FindWithTag("Player").transform; //target the player
     }
      
     function Update () {
      
     // check distance to target every frame:
     var distance = (target.position - myTransform.position).magnitude;
      
     if (chasing) {
      
     //rotate to look at the player
     myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
     Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
      
     //move towards the player
     myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
      
     // give up, if too far away from target:
     if (distance > giveUpThreshold) {
     chasing = false;
     }
      
     // attack, if close enough, and if time is OK:
     if (distance < attackThreshold && Time.time > attackTime) {
     // Attack! (call whatever attack function you like here)
     attackTime = Time.time + attackRepeatTime;
     }
      
     } else {
     // not currently chasing.
      
     // start chasing if target comes close enough
     if (distance < chaseThreshold) {
     chasing = true;
     }
     }
     }