Meanwhile, an hour before taping, Joanna greets Tom Brokaw and Bob Woodward. "Bob Woodward and Tom Brokaw have paved the way as far as reporting and covering military families and telling their stories," Joanna says.

Watch Joanna share her brother's story with Tom and Bob

"I know about Joanna's brother, and I feel in my heart if you have a family member or are a person who is serving our country, that this show would mean a sense of validation to you," Oprah says. "Because I know that often whatever is going on in your life, you feel like you're going through that alone. And so I think a show like this is important for what we do as a country and who we are as a country."