WATCH: 16-year-old accused of gunning down classmate makes 1st court appearance

WATCH: 16-year-old accused of gunning down classmate makes 1st court appearance
  • Now Playing: Notorious Boston gangster Whitey Bulger found dead in prison



  • Now Playing: Powerful storm heading east creates funnel cloud in Oregon



  • Now Playing: Amy Robach climbs Mount Kilimanjaro 5 years after cancer



  • Now Playing: Mother sues day care, accuses staff of directing ‘fight club’



  • Now Playing: Allegations of a possible smear campaign against special counsel



  • Now Playing: Trump, first lady and Kushners pay their respects in Pittsburgh



  • Now Playing: Family grieving after 3 siblings killed at Indiana school bus stop



  • Now Playing: Authorities investigating deadly helicopter crash in Florida



  • Now Playing: Whitey Bulger, notorious Boston mob boss, killed in prison



  • Now Playing: Why it Matters: Meghan McCain says US foreign policy is what is driving her to vote



  • Now Playing: Why it Matters: Parkland shooting survivors on what’s driving them to vote



  • Now Playing: 16-year-old accused of gunning down classmate makes 1st court appearance



  • Now Playing: President Trump plans to end birthright citizenship



  • Now Playing: Stacey Abrams on running for governor in Georgia



  • Now Playing: FBI warns potential targets that suspicious packages may still be in the mail



  • Now Playing: Trump orders troops to border



  • Now Playing: First funerals to be held today for victims of Pittsburgh synagogue massacre



  • Now Playing: ‘GMA Day’ viewers sent us their scarily-bad Halloween costume fails



  • Now Playing: 3 children killed at school bus stop



  • Now Playing: Synagogue survivor recalls hiding amid gunfire



  • Read More