The important thing to remember is that Texas Rangers are a peacekeeping organization. Yes, they can fight, and they can fight well at need be, but their primary mission is to keep the peace by diffusing situations that could threaten the common peace. Their primary area of focus is Texas and her colonies, but they have secondary jurisdictions throughout the Western Alliance. They often work with other Rangers, Knights Errant, Cowboys, or other similar organizations in the Alliance. As the common meme goes, when a Star Fury, a Starfighter, and an Avenger comes into town, there is liable to be some excitement in the near future. If more than one of each shows up, or if other similar organizations join the party, the virtual certainty of excitement increases on a logarithmic scale.