How To Work RigidBody.AddExplosionForce()

Anything within the radius of the Vector3(where you apply the AddExplosionForce) that has a rigidbody, will be affected. You can use this code in a few ways. The most simple way is to attach it to an empty gameObject and instantiate that object with your explosion object or bullet/missile impact. I'll post my code which works ( the copy and paste of the code isn't exactly the same as the original, some of the formatting is a bit messy in the conversion)

 #pragma strict
     
 var radius : float = 1;    // All objects in this radius with a rigidbody component will be affected
 var power = 10.0;    // how much horizontal power should there be?
 var upForce = 2.0;    // how much vertical power should there be?
 
 private var layerMask : LayerMask; //So we can choose which objects will be added to the Collider Array
 private var myColliders : Collider[];    // Collider Array
 
 function Start () {
 layerMask = 1 << 9 | 1 << 10; // Affect only layers 9 and 10    
 myColliders = Physics.OverlapSphere(transform.position, radius, layerMask);  // Add objects to array that are within radius       
     // Check objects in array and apply explosionforce to appropriate objects.
     for(var hit : Collider in myColliders) {
         if(hit.transform.tag == "Enemy" || hit.transform.tag == "Shootable"){    // Which tagged objects should we apply the explosion to?   
             if(hit && hit.rigidbody){ // if we have an object and that object has a rigidbody then apply the explosion to it
                 hit.rigidbody.AddExplosionForce(power, transform.position, radius, upForce);  // All rigidbodies in the radius will be affected regardless of layer or tag.                   
             }
         }
     }
 }
 Destroy(gameObject); // Now that we have applied the explosionforce we can delete/destroy this object.
 }