“Today” show co-host Savannah Guthrie paid a visit to her NBC colleagues on Thursday to thank them for their support as she and her siblings search for their mother, Nancy Guthrie, who was believed to have been kidnapped in Arizona over a month ago. Updates in the case have been scant since law enforcement released security footage of a suspect dressed in a ski mask last month. Guthrie said she wants to “try” to return to the show at some point. “I’m holding onto my faith,” she said, per the “