Holt, who revealed in February that he is stepping down from his longtime anchor role, will take over as the host of 'Dateline' this summer

On Feb. 24, Holt sent a letter to his colleagues announcing his departure from “NBC Nightly News.” The 65-year-old called his long career “an amazing ride” and said he is “thrilled” to shift to “Dateline” full-time and work on subjects he cares “deeply” about.