Now Playing: NTSB ‘unhappy’ with Tesla over crash disclosures
Now Playing: Former school bus driver on trial for fatal crash
Now Playing: Dramatic video shows children escaping from balcony as fire tears through building
Now Playing: Self-help author apologizes for #MeToo comments after video goes viral
Now Playing: Deadly Trump Tower fire caused by electrical malfunction: Sources
Now Playing: Lawmaker becomes first US senator to give birth while in office
Now Playing: Bodycams show man running toward officer with tool before fatal shooting
Now Playing: April among the coldest on record in the Midwest
Now Playing: Senator says Facebook CEO claims he was misled by Cambridge Analytica
Now Playing: Woman completes Boston Marathon early, pushing boyfriend in wheelchair
Now Playing: Haley blasts Assad and Russia, vows ‘US will respond’
Now Playing: Portland cops shot, killed alleged carjacker inside homeless shelter
Now Playing: Topless protester who allegedly lunged at Bill Cosby ID’d as actress on his hit show
Now Playing: 70-year-old woman suspected in theft from former business partner
Now Playing: 5-year-old boy allegedly killed by dad is mourned
Now Playing: Police search for man wanted for triple killing on charter bus
Now Playing: Trump fought putting sprinklers in Trump Tower
Now Playing: Multistate manhunt for man accused of killing his mom, friend
Now Playing: April forecast brings more snow to parts of US
Now Playing: Bus strikes Long Island overpass, injuring high school students
