Now Playing: Missing Iditarod Dog Found Alive

Now Playing: 106-Year-Old Woman Visits the White House

Now Playing: Young pediatrician held hostage and shot by terminally ill doctor

Now Playing: Torrential rain, mudslides and snow pummel West Coast

Now Playing: DHS issues rare warning about high domestic terror threat

Now Playing: Michael Strahan tests positive for COVID-19

Now Playing: Nation’s top COVID-19 experts project 90K more deaths in the next month

Now Playing: Scott Falater discusses whether he believes his wife has forgiven him

Now Playing: Meet the Waffle Man: he waffles everything

Now Playing: ABC News Live Prime: Wednesday, January 27, 2021

Now Playing: Confused cat meets her Lego doppelgänger

Now Playing: A grim coronavirus prediction, 1 year later

Now Playing: The Rundown: Top headlines today: Jan. 27, 2021

Now Playing: Reddit community WallStreetBets squeezes short sellers

Now Playing: By the Numbers: The pandemic’s toll on working parents

Now Playing: Author Meena Harris discusses her new book, 'Ambitious Girl'

Now Playing: Icicles form amid icy waves on Lake Michigan

Now Playing: Oscar-winning actress Cloris Leachman dies at 94

Now Playing: Amanda Gorman to perform poem at Super Bowl

Now Playing: Rosalind ‘Roz’ Brewer to become Walgreens CEO