public override void Execute()
{
// Resiter the change with the Level
Level.KilledUFO();
// if this brick removed the last child in the column, then remove column
// Debug.WriteLine(" alien {0} parent {1}", this.pAlien, this.pAlien.pParent);
GameObject pA = (GameObject)this.pAlien;
GameObject pB = (GameObject)Iterator.GetParent(pA);
pB.bMarkForDeath = true;
pA.Remove();
Debug.WriteLine("---- Hiding : Missile Destroyed");
TimerManager.Add(TimeEvent.Name.HideUFO, new HideUFO((AlienGrid)pB), ((AlienGrid)pB).movementTimeInterval);
}
