Who are the speakers at the beggining of the chapter?

As the novel opens, two characters are discussing a boy and his older siblings. One says, "I tell you, he's the one." The other voice is not as sure, but he acquiesces to the first's request to "take him," because they're "saving the world, after all." Already we learn of "the buggers," or Formics, the alien enemy. I would think the characters are Colonel Graff and another of the trainers/recruiters in the program.