Secure Vaults Mount Pony held billions in cash to restart the economy after nuclear war, along with a hardened communications hub.12 New Mission Now part of the Library of Congress audiovisual center, the bunker’s vast vaults store film and media archives.345 References federalreserve.gov ↩ virginiaplaces.org ↩ loc.gov ↩ washingtonpost.com ↩ en.wikipedia.org ↩