String Problem in Java Script

Here is my script, hopefully it is easier to read now. The complete line for var sirenGameObjects : GameObject[] = GameObject.FindGameObjectsWithTag(tag

is

var sirenGameObjects : GameObject[] = GameObject.FindGameObjectsWithTag(tag.Siren);

I am getting three errors,

Assets/PlayerSightingLast.js(21,93): BCE0019: 'sirens' is not a member of 'String'.

Assets/PlayerSightingLast.js(19,58): BCE0019: 'mainLight' is not a member of 'String'.

Assets/PlayerSightingLast.js(18,62): BCE0019: 'alarm' is not a member of 'String'.

On line 21,19, and 18. Any advice?

 public var position : Vector3 = new Vector3(1000f, 1000f, 1000f);        
 public var resetPosition : Vector3 = new Vector3(1000f, 1000f, 1000f);  
 public var lightHighIntensity : float = 0.25f;                          
 public var lightLowIntensity : float = 0f;                              
 public var fadeSpeed : float = 7f;                                      
 public var musicFadeSpeed : float = 1f;                                 
 
 
 private var alarm : AlarmsLights;                                     
 private var mainLight : Light;                                          
 private var panicAudio : AudioSource;                                    
 private var sirens : AudioSource[];                                     
 
 function Awake ()
     {        
         alarm = GameObject.FindGameObjectWithTag(tag.alarm)GetComponent(AlarmsLights);
         mainLight = GameObject.FindGameObjectWithTag(tag.mainLight).light;
           panicAudio = transform.Find("secondaryMusic").audio;
           var sirenGameObjects : GameObject[] = GameObject.FindGameObjectsWithTag(tag.Siren);
         sirens = new AudioSource[sirenGameObjects.Length];
          for(var i = 0; i < sirens.Length; i++);
     {
         sirens[i] = sirenGameObjects[i].audio;
     }
 }
 
 
 function Update ()
 {
    
     SwitchAlarms();
     MusicFading();
 }
 
 
 function SwitchAlarms ()
 {
     
     alarm.alarmOn = position != resetPosition;
     
    
     var newIntensity : float;
     
     
     if(position != resetPosition)
         
         newIntensity = lightLowIntensity;
     else
         
         newIntensity = lightHighIntensity;
     
     
     mainLight.intensity = Mathf.Lerp(mainLight.intensity, newIntensity, fadeSpeed * Time.deltaTime);
     
   
     for(var i = 0; i < sirens.Length; i++)
     {
         
         if(position != resetPosition && !sirens[i].isPlaying)
             sirens[i].Play();
         
         else if(position == resetPosition)
             sirens[i].Stop();
     }
 }
 
 
 function MusicFading ()
 {
     
     if(position != resetPosition)
     {
       
         audio.volume = Mathf.Lerp(audio.volume, 0f, musicFadeSpeed * Time.deltaTime);
         
         
         panicAudio.volume = Mathf.Lerp(panicAudio.volume, 0.8f, musicFadeSpeed * Time.deltaTime);
     }
     else
     {
         
         audio.volume = Mathf.Lerp(audio.volume, 0.8f, musicFadeSpeed * Time.deltaTime);
         panicAudio.volume = Mathf.Lerp(panicAudio.volume, 0f, musicFadeSpeed * Time.deltaTime);
     }
 }