if (this.Target != null)
{
    Vector3 distance = (this.Target.Position.Translation - this.Position.Translation);
        Vector2 flatdistance = new Vector2(distance.X, distance.Z);
        Elevation = (float)Math.Atan2(-distance.Y, flatdistance.Length());
    Rotation = (float)Math.Atan2(distance.X, distance.Z);
}