To many WWII movies

I guess I watched too many World War II movies when I was young. You know the ones where the good guys are in Nazi Germany and trying to get out. Everywhere they go, there are Gestapo Agents and Nazi officicals, someone wanting to see their papers. That is what I think of when Congress passes things like the "Real ID Act." Now, I read this . The first thing that I thought of is why do we need undercover agents on trains? Is someone in the government afraid that terrorist are gonna hijack a train and ram it into a federal building somewhere?