Transcript for Remembering Peter Jennings
Finally tonight here, I remember as a boy guessing who peter Jennings would choose as person of the week. It's hard for us to believe, it's been ten years since we lost our leader. He would never want to be named person of the week. So we won't, tonight. But we choose the people that changed the course of their lives because of peter. I had the opportunity to pass some of that on to the audience. Tonight, we remember an icon. Was it your ambition to be in broadcasting? It was. I couldn't have done anything else. We were all grateful he followed his childhood dream. Now, peter Jennings. Tornadoes -- Reporting for more than four decades, he guided us through the most difficult of times. I checked in with my children, who were deeply stressed. If you're a parent, if you have a kid, call them up. One of his earliest stories, Munich. He ushered in so many of the joyful moments, too. I have learned in the last couple of days, I have lung cancer. Almost 10 million Americans have lung cancer. So many responding immediately. Sometimes it takes one thing to make you snap and say, that's enough. For Nancy ferris, it was peter. Tonight, sending us this photo, healthy. Hundreds of you writing us. One saying, peter Jennings was the reason I quit. Thanks to peter for opening my eyes. Another, I quit ten days away. And with all of the messages coming in today, we were reminded of something peter once said. Americans are hopeful people, and I think there's a great beauty in that. There's a common denominator of being in America and this society that breeds hopefulness. The CDC saying that the response to peter's message, unprecedented. I'm David Muir. I hope to you see back here on Monday. Good night.
This transcript has been automatically generated and may not be 100% accurate.