Now Playing: Premature babies take part in spook-tacular Halloween costume contest
Now Playing: 3-legged dog endures after gator attack
Now Playing: Dogs show off their costumes in Halloween parade
Now Playing: Vet who lost both legs in Afghanistan runs 31 marathons in 31 days
Now Playing: ‘T-Rex Stampede’ invades downtown Nashville
Now Playing: Growing questions about an inmate who escaped from a West Virginia jail
Now Playing: Green Beret rushes home from Afghanistan for an important mission
Now Playing: An urgent warning concerning novelty contact lenses
Now Playing: Puerto Rico moves to cancel $300M contract with company hired to repair electrical grid
Now Playing: Dangerous weather batters the East Coast
Now Playing: Russia investigation seeks first charges
Now Playing: West Virginia police seek escaped inmate
Now Playing: Halloween by the numbers
Now Playing: Tech CEO surprises girls with homecoming dresses
Now Playing: $1 billion lawsuit filed against LuLaRoe by Sacramento area women
Now Playing: NFL Texans players considered walkout over owner’s “inmates” comment
Now Playing: American Airlines diverts flight due to cracked windshield
Now Playing: Dodgers defeat Astros to tie up World Series
Now Playing: Tropical Storm Philippe approaches southern Florida
Now Playing: 7-year-old on throwing first pitch at World Series: ‘Exciting’
