Outruns Harry

Charging in headlong might be a really stupid idea, but it would be an even worse idea to stand around doing nothing, throwing away the only help I was likely to get. Besides. For better or worse, I'd agreed to work with Gard, and I wasn't going to let her go in without covering her back.
So I charged headlong down the tunnel toward the source of the terrifying bellow. Mouse, perhaps wiser than I, hesitated a few seconds longer, then made up for it on the way down the tunnel, until he was running a pace in front of me, matching my stride. We'd gone maybe twenty yards before his breath began to rumble out in a growl of pure hostility, and he let out his own roar of challenge.
Hey, when in Cimmeria, do as the Cimmerians do. I screamed too. It got lost in all the echoes bouncing around the tunnels.

Side Jobs, Heorot, Page 136