Now Playing: 9-year-old drops out of college

Now Playing: More eyewitnesses describe New Zealand volcano eruption

Now Playing: It’s Morning, America: Wednesday, Dec. 11, 2019

Now Playing: Across the Pond: Suicide bombing near U.S. base in Afghanistan

Now Playing: Urgent search for Antarctic plane with 38 people that disappeared off radar

Now Playing: Suicide bomb explodes at largest US military base in Afghanistan

Now Playing: Understanding the deadly New Zealand volcano eruption

Now Playing: Saudi flight students grounded after Pensacola naval base rampage

Now Playing: ‘Everybody was … burned’: Survivor of volcanic eruption says

Now Playing: Man encounters avalanche while out for a run in Alberta

Now Playing: Ash litters beaches in Sydney as brushfires continue to burn

Now Playing: Volcanic eruption turns fatal

Now Playing: Massive protests paralyze Paris

Now Playing: Panda twins make first public appearance at Berlin Zoo

Now Playing: White Island, soccer championship, refugees in Cox’s Bazar: World in Photos, Dec. 10

Now Playing: Plane carrying 38 people goes missing on way to Antarctica

Now Playing: It’s Morning, America: Tuesday, Dec. 10, 2019

Now Playing: Several shot dead at Czech Republic hospital

Now Playing: Videos and details from eyewitnesses after deadly volcano eruption

Now Playing: Trump reacts to report on Russia probe, FBI director speaks out