Now Playing: Adorable trio of otters slide across frozen pond in Maine

Now Playing: Honolulu hotel shooter barricades himself in room

Now Playing: UK in official period of mourning for a week

Now Playing: Phoebe Waller-Bridge to star in 5th installment of ‘Indiana Jones’

Now Playing: NASA reschedules the flight of Ingenuity Mars Helicopter

Now Playing: Housing market buying frenzy

Now Playing: Desperate search for missing LSU Freshman

Now Playing: Kids telling their stories during the pandemic

Now Playing: Over 350 Reports of severe weather across the South

Now Playing: Will Biden follow through with his promise of police reform?

Now Playing: Derek Chauvin murder trial starting its 3rd week tomorrow

Now Playing: Black and Latino Army lieutenant sues 2 Virginia police officers

Now Playing: Record high number of vaccine doses administered yesterday

Now Playing: Pasta Week’s grand finale: Baked feta pasta

Now Playing: Our favorite Mandy Moore moments for her birthday

Now Playing: Diane Warren up for her 12th Oscar nomination

Now Playing: New and classic songs to binge for Taylor Swift lovers

Now Playing: Tributes pour in following death of Prince Philip

Now Playing: Deals and Steals: Green Clean!

Now Playing: The Weeknd's 'Blinding Lights' stays on top 100 for record amount of weeks