Now Playing: Rangel: 'I Don't Have Any Fear'

Now Playing: Julie Chen absent from talk show amid new accusations against husband, Les Moonves

Now Playing: Medics try to revive man shot by officer in his own home: Video

Now Playing: Olivia Newton-John reveals that she's battling cancer for a 3rd time

Now Playing: Doctors providing opioids without proper documentation: Study

Now Playing: Blast from methane-gas pipeline levels home, forces evacuation

Now Playing: Governor signs bill committing California to 100 percent clean energy by 2045

Now Playing: More than 1 million people told to evacuate as Hurricane Florence nears East Coast

Now Playing: Homecoming queen makes game-winning kick during football game

Now Playing: Tennis officials stand by US Open umpire in Serena Williams flap

Now Playing: Traffic stop turns deadly as suspect opens fire on officers: Police

Now Playing: Video shows an off-duty officer moments after she shot an unarmed man

Now Playing: Former President Obama gave a heated speech against Trump ahead of midterm elections

Now Playing: North Korea held its 1st military parade since the Singapore summit

Now Playing: George Papadopoulos admits he lied to the FBI about contacts with Russian operatives

Now Playing: New accusations of sexual assault against CBS head: Report

Now Playing: Serena Williams was fined $17,000 for arguing with the chair umpire

Now Playing: Hurricane Florence heads toward East Coast

Now Playing: Heavy rains from Tropical Storm Gordon swamping parts of South, Midwest

Now Playing: Video shows gunman entering lobby, firing on victims: Authorities