What's left behind in Afghanistan after U.S. departure

The final flight of American troops left Afghanistan just before midnight on what is now Tuesday, August 31, in Kabul, after 20 years of war. The U.S. airlifted more than 120,000 American civilians and Afghan allies from Kabul, but thousands of Afghans who wanted to leave were left behind, at least for now. And the deaths of Americans and Afghans last week haunt this exit. Jane Ferguson reports.