Sulu laughed, unable to help it, though he did try to shake it pretty quick. It helped that he could fall into his usual nerdy mode to answer Ianto's question. "Starfleet is a peacekeeping and humanitarian armada for the advancement of Federation knowledge about the galaxy and its peoples, the expansion of Federation science and technology, the military defense of the Federation and it serves a diplomatic function for the Federation towards warp civilizations."

He realized that he'd just recited almost exactly from the Starfleet brochure he'd taken from a recruitment session and flushed slightly, running a hand through his hair. "It's... like the Navy and the Peace Corps rolled into one, I guess."