Ben Grimm and Fawkes found one entrance into the tunnels under Olney.
Felix found another. Ellen was right; someone has been here recently. Deathclaws do not, after all, set up tip-proof electric lanterns and battered, ancient generators to light the way. (If they do, everyone is in a great deal more trouble than previously thought.)
"Well," Ellen says, glancing up and down the length of the tunnel section people are standing in, "it looks like we'll have company wherever we're going, aside from the kind with claws. We could use a scout, I think, as well as local defense. I've got a Stealth Boy if needed..."