Follow Game Object? (keeping set distance)

Hey gang, I've been looking around and trying to find away to make a trail of objects following a leader, (like of the old shooter games)

I have my ship moving and looking at its "Leader" how do I keep a SET distance between the 2 objects?

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class FollowtheLeader : MonoBehaviour {
 
     public float FollowSpeed;
     public float FollowDistance; 
     public Transform ObjectTouFollow;
 
     
     // Update is called once per frame
     void Update () {
 
         transform.LookAt(ObjectTouFollow); // look at leader
         transform.Translate(Vector3.forward * FollowSpeed * Time.deltaTime); // Move Forward
 
 
         /// Keep distance as set distance  "FollowDistance" 
         
     }
 }