The Combat Life Saver (designated as '4' in the team) is placed north west of the rest of the team. While this does not effect gameplay when the units are left at default settings, it is somewhat annoying when trying to make a mission, and will effect gameplay if the CLS does not have the special set to "in formation" or "flying" (although I'm not sure why someone would set them to fly, because they don't) Anyway, it's not a high priority thing, it's just an annoyance.