Alarm bells begin clanging. Amber strobes descend from the ceiling of the lobby and begin flaring rapidly. The guard blinks, shakes his head, rubs a hand down over his mouth, then grabs a telecom handset from the console behind the counter."Sergeant on patrol," he says into the handset."My board shows an incident at... at Lab Six. It sounded like an explosion. Yes, sir. Initiating security lockdown."