Now Playing: Trump says US prepared for Florence
Now Playing: Hurricane Florence threatens Myrtle Beach
Now Playing: How Aflac is raising awareness for childhood cancer
Now Playing: Tony Bennett and Diana Krall perform ‘Love is Here to Stay’ on ‘GMA’
Now Playing: Reese Witherspoon discusses her new book, ‘Whiskey in a Teacup’
Now Playing: Catching up with Reese Witherspoon live on ‘GMA’
Now Playing: ‘Friends’ star Matthew Perry returns from the hospital after 3-month stay
Now Playing: Sally Field speaks out about her new memoir, ‘In Pieces’
Now Playing: Duchess Meghan Markle helps launch a cookbook for charity
Now Playing: Girl with 3D-printed hand throws 1st pitch at all 30 MLB ballparks
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
Read More