Now Playing: Painting fetches $90M in record-setting auction

Now Playing: Alabama district attorney shot after ambush by former state trooper: Police

Now Playing: CNN's Jim Acosta arrives at District Court to appeal for White House press pass

Now Playing: Nor'easter leaves kids stranded at school overnight

Now Playing: News headlines today: Nov. 16, 2018

Now Playing: Secret indictment of Wikileaks founder accidentally disclosed

Now Playing: Disney to donate $2M to 'Make-A-Wish' with the 'Share Your Ears' campaign

Now Playing: Alleged mistress of man charged with killing wife, 2 daughters speaks out

Now Playing: Shooter who allegedly killed 2 at Kentucky Kroger charged with hate crime

Now Playing: Number of missing in California fire skyrockets

Now Playing: Navy SEALs, Marines charged in Green Beret murder

Now Playing: The emotional moment face transplant recipient thanks his donor's mom

Now Playing: 'Batkid' cancer-free 5 years after Make-A-Wish adventure

Now Playing: Kim Porter dies at 47

Now Playing: Couple and homeless veteran charged in GoFundMe scheme

Now Playing: Gas prices plunge ahead of Thanksgiving

Now Playing: Women accuse Dartmouth professors of sexual assault, harassment

Now Playing: New York-area commuters stranded for hours amid snow

Now Playing: Winter storm creates dangerous commute along East Coast

Now Playing: Winter weather causes chaos