President Biden announces new goal for 70 percent of adults to get first Covid vaccine by July 4, the FDA may soon authorize Pfizers Covid vaccine for children, and fears of the Talibans return as U.S. troops leave Afghanistan.Watch NBC Nightly News With Lester Holt at 6:30 p.m. ET 5:30 p.m. CT (or check your local listings).00:00 Intro02:07 New Vaccination Goal05:58 Catastrophic Train Crash10:23 Inside Afghanistan Following U.S. Withdrawal 12:18 Hiring Shortages15:38 The Future of Home Drone Delivery17:30 Mother Gives Birth on Flight to Hawaii19:01 Inspiring America: A Dedicated Teacher