At the Facility, the inner part where the kids live is surrounded by observation passages that are closed off from the rest of the outer Facility. The exit signs may or may not lead to actual exits from the building.
The Last Samurai - "And so the days of the Samurai had ended. Nations, like men, it is sometimes said, have their own destiny. As for the American Captain, no one knows what became of him. Some say that he died of his wounds. Others, that he returned to his own country. But I like to think he may have at last found some small measure of peace, that we all seek, and few of us ever find."