Now Playing: Deadly tornadoes hit Alabama

Now Playing: Alabama tornadoes devastate towns, leaving at least 23 dead

Now Playing: Alabama community of Beauregard devastated after deadly tornadoes kill at least 23

Now Playing: Luke Perry dies from massive stroke at 52

Now Playing: Jet slides off Maine runway

Now Playing: Prayer service held at Alabama high school in wake of deadly tornado

Now Playing: San Francisco Giants CEO taking leave of absence

Now Playing: Two missing California girls found

Now Playing: Baltimore husband, daughter charged with murder after blaming panhandler

Now Playing: Massive avalanche in Colorado

Now Playing: 4-year-old girl with spina bifida walks for first time as her friends cheer her on

Now Playing: 3-year-old girl puts fellow preschooler in headlock after he asked her to marry him

Now Playing: Sara’s book report with ‘Daisy Jones and the Six’ author Taylor Jenkins Reid

Now Playing: Is free speech on college campuses in jeopardy?

Now Playing: Did Fox News silence Stormy Daniels’ story?

Now Playing: Bari Weiss on anti-Semitism in America

Now Playing: Outrage after police officers face no criminal charges in Stephon Clark case

Now Playing: Deadly tornadoes hit Southeastern Alabama

Now Playing: Students get snow day after overnight snowstorm slams New York and Boston

Now Playing: Police announce break in good Samaritan killing