Targetting two objects at once

Im trying to make it so the player can store two objects as targets, the issue I am having with this, is that when I target one object it selects that object twice.

function Combine()
{
var ray : Ray = camera.ViewportPointToRay (Vector3(0.5,0.5,0));
var hit : RaycastHit;
if ((Physics.Raycast (ray, hit)) && (combineTargetOne == null) && (hit.collider.gameObject.tag == "Cube1"))
{
Debug.Log("target one acquired");
combineTargetOne = hit.collider.gameObject;
}
if ((Physics.Raycast (ray, hit)) && (combineTargetOne != null) && (combineTargetTwo == null) && (hit.collider.gameObject.tag == "Cube1"))
{
Debug.Log("target two acquired");
combineTargetTwo = hit.collider.gameObject;
}
}

I have tried a few different ways to get around this, such as using return; or break; to exit out of the function once the first target has been acquired, and changing the 2nd part of the function to an else, or an if else statement - but none of this works for me :( Kinda newbie at raycasting as well, maybe there is a better way to handle this?