 This is Our American Stories, and we tell every kind of story here on this show. And our favorite kind, of course, has to do with American history. And up next comes Deirdre Berzer. And Deirdre is a professor at Hillsdale College, proud sponsors of all of our history stories. And today, she'll be sharing with us the story of one of history's most essential women, Sacagawea. Here's our own Monty Montgomery to kick off the story.