While the weather sucks and the meal plan may rob you blind, you can always count on help at Johns Hopkins - from the security van drivers. Ah, the heroes of Homewood, always available to take you to Superfresh or Sammy - without them, most of us would be doomed to wander the streets drunkenly on the weekends or do without groceries. Until 3 a.m., these guys are your ticket to anywhere in a one-mile radius. So who are these mysterious characters with the walkie-talkies? Why do they drive the vans? And what do they have to put up with to earn their pay?