Note: Some fans place Hilthros in the "Hilthros system" as the events of Red and Blue are said to occur in Hilthros in several sources. But the term "Hilthros system" is never specifically used. The events have also been said to have taken place at Sirius. However, the red planet in Red and Blue and the planet described in Wing Commander I&II are not necessarily the same planet (although the red planet was at least intended to be 'Hilthros' in the 'obselete' Academy bible).