Guests host: Lee Cowan. In our cover story, David Martin examines the days leading up to the rapid fall of the Afghan government. Plus: David Pogue traces the history of the cellphone by sitting down with its inventor, Marty Cooper; Tracy Smith profiles Oscar-winning composer John Williams; Lee Cowan interviews a medal-winning archer who was born without arms; Dr. Jon LaPook meets a doctor who has won acclaim for his side gig as a singer-songwriter; Anna Werner visits a New Orleans shop that is more than just an antique store; and Luke Burbank visits a California ghost town with a population of one.

Hosted by Jane Pauley. In our cover story, Erin Moriarty investigates how some businesses are being affected by a shortage of staff - and how lower-wage workers are finding new career opportunities. Plus: Martha Teichner looks at how, 20 years later, 9/11 is being remembered and taught; John Dickerson talks with Pulitzer Prize-winning photographer Richard Drew about the searing pictures he took on 9/11; Tracy Smith sits down with actor Jeff Daniels, star of "American Rust"; Mo Rocca finds out what it takes to be a ball person at the U.S. Open; and Ben Tracy interviews Linda Christensen, who for half a century was the Minnesota State Fair's butter sculptor.