Full Metal Panic

A girl who holds military secrets in her head is wanted by terrorists. In steps Mythril, an international mercenary group, to protect her. Who do they send to protect her?--A high school aged boy, who has grown up as a mercenary and now comes to Japan posing as a high school student in order to protect the girl. Not the deepest storyline (at least by episode seven), but hey, it's and action/comedy kinda thing so the plot doesn't matter too much. Right? If nothing else the art is really good.