TODAY 8a: Masks 101 — what should kids wear to stay safe in school? “This Is Us” cast on final season. Jenna Bush Hager surprises Savannah Guthrie with Andrea Bocelli.

<p>With Covid cases surging to new records, Vicky Nguyen has advice on what masks adults and kids should be wearing. Plus, the entire cast of NBC’s “This Is Us” — including Milo Ventimiglia, Mandy Moore, Sterling K. Brown, Chrissy Metz and Justin Hartley — join Savannah Guthrie and Hoda Kotb to chat ahead of tonight’s premiere of the show’s final season. Also, Jenna Bush Hager surprises Savannah with an Andrea Bocelli performance for her 50th birthday.</p>