create a pbs news hour segment to discuss: This segment would provide a comprehensive overview of the Federal Reserve System, its structure, functions, and role in the U.S. economy. It would also delve into the Fed's response to the 2008 financial crisis, offering insights into its crisis management strategies and the lessons learned. The segment would conclude with a discussion on the future of the Federal Reserve, considering its past experiences and the current economic landscape, explain in an engaging way