private void shooterSpawned(GameObject go)
    {
        Damagable damagable = go.GetComponent <Damagable>();

        if (_dead)
        {
            damagable.Kill(0.0f);
        }
        else
        {
            _shooters.Add(damagable);
            damagable.OnDeathCallbacks.Add(shooterDied);
        }
    }