All AI's dying at same time FPS

When I shoot an AI all others die with it. I made sure when I want another, I just make it with scripts and every thing. I don't believe it is in the scripts but I'll post the scripts just in case though

Character damage script:

 var hitPoints = 100.0;
 var deadReplacement : Transform;
 var dieSound : AudioClip;
 function Update()
 {
     if (Input.GetKeyDown(KeyCode.Mouse0))
     {
        ApplyDamage(50.0f);
     }
 }
 function ApplyDamage (damage : float) {
     // We already have less than 0 hitpoints, maybe we got killed already?
     if (hitPoints <= 0.0)
         return;
 
     hitPoints -= damage;
     if (hitPoints <= 0.0)
     {
         Detonate();
     }
 }
 
 function Detonate () {
     // Destroy ourselves
     Destroy(gameObject);
     
     // Play a dying audio clip
     if (dieSound)
         AudioSource.PlayClipAtPoint(dieSound, transform.position);
 
     // Replace ourselves with the dead body
     if (deadReplacement) {
         var dead : Transform = Instantiate(deadReplacement, transform.position, transform.rotation);
         
         // Copy position & rotation from the old hierarchy into the dead replacement
         CopyTransformsRecurse(transform, dead);
     }
 }
 
 static function CopyTransformsRecurse (src : Transform,  dst : Transform) {
     dst.position = src.position;
     dst.rotation = src.rotation;
     
     for (var child : Transform in dst) {
         // Match the transform with the same name
         var curSrc = src.Find(child.name);
         if (curSrc)
             CopyTransformsRecurse(curSrc, child);
     }
 }

AI Script:

 var speed = 3.0;
 var rotationSpeed = 5.0;
 var shootRange = 15.0;
 var attackRange = 30.0;
 var shootAngle = 4.0;
 var dontComeCloserRange = 5.0;
 var delayShootTime = 0.35;
 var pickNextWaypointDistance = 2.0;
 var target : Transform;
 
 private var lastShot = -10.0;
 
 // Make sure there is always a character controller
 @script RequireComponent (CharacterController)
 
 function Start () {
     // Auto setup player as target through tags
     if (target == null && GameObject.FindWithTag("Player"))
         target = GameObject.FindWithTag("Player").transform;
 
     Patrol();
 }
 
 function Patrol () {
     var curWayPoint = AutoWayPoint.FindClosest(transform.position);
     while (true) {
         var waypointPosition = curWayPoint.transform.position;
         // Are we close to a waypoint? -> pick the next one!
         if (Vector3.Distance(waypointPosition, transform.position) < pickNextWaypointDistance)
             curWayPoint = PickNextWaypoint (curWayPoint);
 
         // Attack the player and wait until
         // - player is killed
         // - player is out of sight        
         if (CanSeeTarget ())
             yield StartCoroutine("AttackPlayer");
         
         // Move towards our target
         MoveTowards(waypointPosition);
         
         yield;
     }
 }
 
 
 function CanSeeTarget () : boolean {
     if (Vector3.Distance(transform.position, target.position) > attackRange)
         return false;
         
     var hit : RaycastHit;
     if (Physics.Linecast (transform.position, target.position, hit))
         return hit.transform == target;
 
     return false;
 }
 
 function Shoot () {
     // Start shoot animation
     animation.CrossFade("shoot", 0.3);
 
     // Wait until half the animation has played
     yield WaitForSeconds(delayShootTime);
     
     // Fire gun
     BroadcastMessage("Fire");
     
     // Wait for the rest of the animation to finish
     yield WaitForSeconds(animation["shoot"].length - delayShootTime);
 }
 
 function AttackPlayer () {
     var lastVisiblePlayerPosition = target.position;
     while (true) {
         if (CanSeeTarget ()) {
             // Target is dead - stop hunting
             if (target == null)
                 return;
 
             // Target is too far away - give up    
             var distance = Vector3.Distance(transform.position, target.position);
             if (distance > shootRange * 3)
                 return;
             
             lastVisiblePlayerPosition = target.position;
             if (distance > dontComeCloserRange)
                 MoveTowards (lastVisiblePlayerPosition);
             else
                 RotateTowards(lastVisiblePlayerPosition);
 
             var forward = transform.TransformDirection(Vector3.forward);
             var targetDirection = lastVisiblePlayerPosition - transform.position;
             targetDirection.y = 0;
 
             var angle = Vector3.Angle(targetDirection, forward);
 
             // Start shooting if close and play is in sight
             if (distance < shootRange && angle < shootAngle)
                 yield StartCoroutine("Shoot");
         } else {
             yield StartCoroutine("SearchPlayer", lastVisiblePlayerPosition);
             // Player not visible anymore - stop attacking
             if (!CanSeeTarget ())
                 return;
         }
 
         yield;
     }
 }
 
 function SearchPlayer (position : Vector3) {
     // Run towards the player but after 3 seconds timeout and go back to Patroling
     var timeout = 3.0;
     while (timeout > 0.0) {
         MoveTowards(position);
 
         // We found the player
         if (CanSeeTarget ())
             return;
 
         timeout -= Time.deltaTime;
         yield;
     }
 }
 
 function RotateTowards (position : Vector3) {
     SendMessage("SetSpeed", 0.0);
     
     var direction = position - transform.position;
     direction.y = 0;
     if (direction.magnitude < 0.1)
         return;
     
     // Rotate towards the target
     transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime);
     transform.eulerAngles = Vector3(0, transform.eulerAngles.y, 0);
 }
 
 function MoveTowards (position : Vector3) {
     var direction = position - transform.position;
     direction.y = 0;
     if (direction.magnitude < 0.5) {
         SendMessage("SetSpeed", 0.0);
         return;
     }
     
     // Rotate towards the target
     transform.rotation = Quaternion.Slerp (transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime);
     transform.eulerAngles = Vector3(0, transform.eulerAngles.y, 0);
 
     // Modify speed so we slow down when we are not facing the target
     var forward = transform.TransformDirection(Vector3.forward);
     var speedModifier = Vector3.Dot(forward, direction.normalized);
     speedModifier = Mathf.Clamp01(speedModifier);
 
     // Move the character
     direction = forward * speed * speedModifier;
     GetComponent (CharacterController).SimpleMove(direction);
     
     SendMessage("SetSpeed", speed * speedModifier, SendMessageOptions.DontRequireReceiver);
 }
 
 function PickNextWaypoint (currentWaypoint : AutoWayPoint) {
     // We want to find the waypoint where the character has to turn the least
 
     // The direction in which we are walking
     var forward = transform.TransformDirection(Vector3.forward);
 
     // The closer two vectors, the larger the dot product will be.
     var best = currentWaypoint;
     var bestDot = -10.0;
     for (var cur : AutoWayPoint in currentWaypoint.connected) {
         var direction = Vector3.Normalize(cur.transform.position - transform.position);
         var dot = Vector3.Dot(direction, forward);
         if (dot > bestDot && cur != currentWaypoint) {
             bestDot = dot;
             best = cur;
         }
     }
     
     return best;
 }

AI Animation:

var minimumRunSpeed = 1.0;

function Start () { // Set all animations to loop animation.wrapMode = WrapMode.Loop;

 // Except our action animations, Dont loop those
 animation["shoot"].wrapMode = WrapMode.Once;
 
 // Put idle and run in a lower layer. They will only animate if our action animations are not playing
 animation["idle"].layer = -1;
 animation["walk"].layer = -1;
 animation["run"].layer = -1;
 
 animation.Stop();

}

function SetSpeed (speed : float) { if (speed > minimumRunSpeed) animation.CrossFade("run"); else animation.CrossFade("idle"); }

MachineGun script:

 var range = 100.0;
 var fireRate = 0.05;
 var force = 10.0;
 var damage = 5.0;
 var bulletsPerClip = 40;
 var clips = 20;
 var reloadTime = 0.5;
 private var hitParticles : ParticleEmitter;
 var muzzleFlash : Renderer;
 
 private var bulletsLeft : int = 0;
 private var nextFireTime = 0.0;
 private var m_LastFrameShot = -1;
 
 function Start () {
     hitParticles = GetComponentInChildren(ParticleEmitter);
     
     // We don't want to emit particles all the time, only when we hit something.
     if (hitParticles)
         hitParticles.emit = false;
     bulletsLeft = bulletsPerClip;
 }
 
 function LateUpdate() {
     if (muzzleFlash) {
         // We shot this frame, enable the muzzle flash
         if (m_LastFrameShot == Time.frameCount) {
             muzzleFlash.transform.localRotation = Quaternion.AngleAxis(Random.value * 360, Vector3.forward);
             muzzleFlash.enabled = true;
 
             if (audio) {
                 if (!audio.isPlaying)
                     audio.Play();
                 audio.loop = true;
             }
         } else {
         // We didn't, disable the muzzle flash
             muzzleFlash.enabled = false;
             enabled = false;
             
             // Play sound
             if (audio)
             {
                 audio.loop = false;
             }
         }
     }
 }
 
 function Fire () {
     if (bulletsLeft == 0)
         return;
     
     // If there is more than one bullet between the last and this frame
     // Reset the nextFireTime
     if (Time.time - fireRate > nextFireTime)
         nextFireTime = Time.time - Time.deltaTime;
     
     // Keep firing until we used up the fire time
     while( nextFireTime < Time.time && bulletsLeft != 0) {
         FireOneShot();
         nextFireTime += fireRate;
     }
 }
 
 function FireOneShot () {
     var direction = transform.TransformDirection(Vector3.forward);
     var hit : RaycastHit;
     
     // Did we hit anything?
     if (Physics.Raycast (transform.position, direction, hit, range)) {
         // Apply a force to the rigidbody we hit
         if (hit.rigidbody)
             hit.rigidbody.AddForceAtPosition(force * direction, hit.point);
         
         // Place the particle system for spawing out of place where we hit the surface!
         // And spawn a couple of particles
         if (hitParticles) {
             hitParticles.transform.position = hit.point;
             hitParticles.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
             hitParticles.Emit();
         }
 
         // Send a damage message to the hit object            
         hit.collider.SendMessageUpwards("ApplyDamage", damage, SendMessageOptions.DontRequireReceiver);
     }
     
     bulletsLeft--;
 
     // Register that we shot this frame,
     // so that the LateUpdate function enabled the muzzleflash renderer for one frame
     m_LastFrameShot = Time.frameCount;
     enabled = true;
     
     // Reload gun in reload Time        
     if (bulletsLeft == 0)
         Reload();            
 }
 
 function Reload () {
 
     // Wait for reload time first - then add more bullets!
     yield WaitForSeconds(reloadTime);
 
     // We have a clip left reload
     if (clips > 0) {
         clips--;
         bulletsLeft = bulletsPerClip;
     }
 }
 
 function GetBulletsLeft () {
     return bulletsLeft;
 }