Okay so let's say it is a few hundred years from now and most nations on Earth have colonies elsewhere in the solar system and beyond. Obviously those nations are going to want to have military forces to protect those colonies. Now from what I have seen most science-fiction depicts a space military as either being organized similar to a modern-day air force or organized similar to a modern-day naval fleet. So this is just a random little thread that asks which one makes more sense. If you were the leader of your nation would you put your space forces under the command of your air force or your navy? And why?