100 Years Of The Zero Milestone: One Of D.C.'s Most Inconspicuous Monuments

An inconspicuous monument in Washington, D.C., marks one of the nation's most pivotal road trips in its history. A cross-country Army convoy, which began 100 years ago this month, helped inspire a transformational infrastructure investment: the Zero Milestone. Jordan Pascale (@JWPascale) from WAMU reports.