Now Playing: Gas explosion rocks Wisconsin town

Now Playing: A gas explosion causes an evacuation

Now Playing: Woody Allen’s wife breaks her silence in explosive interview

Now Playing: Tom Arnold says Mark Burnett tried to choke him

Now Playing: Friend describes trying to save bodyboarder attacked by shark

Now Playing: Investigators find cause of fatal gas explosions

Now Playing: Dramatic rescues underway amid Florence damage

Now Playing: Florence leaves at least 17 dead, extreme flooding

Now Playing: Republicans react to Brett Kavanaugh sexual assault allegation

Now Playing: Supreme Court nominee’s accuser comes forward

Now Playing: Supreme Court nominee under fire for sexual assault allegation

Now Playing: Trainer to Pink, Kelly Rowland shares her 5-step Wellness Routine

Now Playing: Brit and Co. founder Brit Morin shares the worst advice she never took

Now Playing: A farewell to Ron Claiborne

Now Playing: Chef feeds North Carolina evacuees

Now Playing: New questions over Dallas man’s death

Now Playing: Residents of Fayetteville given 8 hours to evacuate

Now Playing: Shark attack in Massachusetts

Now Playing: New mandatory evacuations underway as Florence marches onward

Now Playing: Storm fury on Trump’s Twitter feed