Now Playing: Severe weather in South could mean more tornadoes

Now Playing: Fan banned from Utah arena after flap with Oklahoma Thunder basketball player

Now Playing: Major fire erupts in Indiana factory

Now Playing: Throttle pushed to maximum before deadly Amazon cargo plane crash: NTSB

Now Playing: 2 actresses among 50 people charged in alleged college admissions scam

Now Playing: 9-year-old girl with special needs bonds with supermarket cashier

Now Playing: 911 call captures chilling moment after actor Luke Perry suffered stroke

Now Playing: Joe Biden hints at presidential run, telling fans, ‘Careful what you wish for’

Now Playing: Blizzard warnings, damaging winds and flood alerts for middle US

Now Playing: Twin-engine plane slams into Ohio neighborhood, killing piloT

Now Playing: Robbery duo wanted in gas station killing of mom

Now Playing: College admissions scandal

Now Playing: Mom arrested after 2 kids drown in locked car that rolled into creek

Now Playing: Mother and father of slain USC student ask public for help

Now Playing: New York City Mayor Bill de Blasio dances to R. Kelly

Now Playing: Actresses, CEOs charged in college admissions scandal

Now Playing: One year since Austin package bombings

Now Playing: Mom killed by rock thrown from overpass

Now Playing: Woman goes missing from North Carolina home

Now Playing: 106-Year-Old Woman’s Wish Granted When She Gets to Meet the Obamas