Gordon Freeman

Linden Street is some distance away, but Aloysius knows the route well enough to snake his little group through without being spotted. (Or perhaps not; the occasional rocket thunders into the ground close by where they'd just been.) Eventually he ducks into the slightly recessed shelter of an emergency door. "Just around the corner," he says, "there's a fire exit. Can your flux capacitor jimmy a magnetic lock at all, or is this going to need explosives?"