Now Playing: Jon Stewart promotes 'Night of Too Many Stars' on 'Jimmy Kimmel Live'

Now Playing: Newborn goat makes friends with farm cats

Now Playing: Winter blast makes driving treacherous across New England

Now Playing: Police bodycam captures confrontation with knife-wielding man

Now Playing: Police in California searching for driver who struck 7-year-old girl

Now Playing: US mother calls move to Syria, marrying ISIS fighters a 'mistake'

Now Playing: US sailor kissing nurse in famous WWII photo dies

Now Playing: Napkin and genealogy site leads to 1993 Minnesota cold-case arrest

Now Playing: Video: Tulsa police pursue suspected stolen car with kids inside

Now Playing: Grand Canyon tourists, workers warned of radiation dangers

Now Playing: 4 people rescue driver trapped behind wheel of SUV in Louisiana

Now Playing: Police find 4 dead of gunshot wounds at Michigan home

Now Playing: Carpenter Greg Zanis travels the U.S. to assemble crosses for shooting victims

Now Playing: Alleged threat against rapper 50 Cent investigated

Now Playing: Man arrested in 1993 murder of 20-year-old woman

Now Playing: Inside the Senate offices

Now Playing: Mountain lion rescued from 50 feet above home in Southern California

Now Playing: How an activist and artist is supporting the homeless community in Los Angeles

Now Playing: News headlines today: Feb. 18, 2019

Now Playing: Women make history at fiery Daytona 500