Now Playing: Nikolas Cruz indicted on 34 counts in Florida school shooting

Now Playing: 19-year-old arrested off campus in deadly Florida school shooting

Now Playing: School district pulls assignment asking students whether Parkland shooter should die

Now Playing: Man battling rare neurological disorder surprises the mother of his 3 children

Now Playing: 2 nuns in California admit to embezzling Catholic school funds

Now Playing: Search continues for Colorado mom missing since Thanksgiving

Now Playing: Police search for a possible serial arsonist in Washington state

Now Playing: Elderly woman almost run over by man who stole her purse, police say

Now Playing: Firefighter dies while battling blaze

Now Playing: A former Miss Kentucky admits she sent topless photos to boy: Officials

Now Playing: Teacher charged with cutting student’s hair in class

Now Playing: Colorado mom missing since Thanksgiving

Now Playing: Homeowner finds dog upon return to property after catastrophic wildfire

Now Playing: Mother trampled to death before concert in Italy

Now Playing: Jehovah’s Witnesses’ house of worship a target of arson

Now Playing: Nick Ayers rumored to replace John Kelly as WH chief of staff

Now Playing: Winter storm barrels into the Southeast bringing heavy snow and rain

Now Playing: Pancho Claus shows the spirit of Christmas to children in need in his community

Now Playing: Urgent manhunt for an inmate on the run in Mississippi

Now Playing: Bizarre teacher forcibly cuts student’s hair while singing the national anthem