Now Playing: Kansas man charged with killing girlfriend on cruise ship
Now Playing: Kidnapping victim Abby Hernandez breaks her silence on ’20/20′
Now Playing: Cruise ship stranded off Massachusetts shore after losing power
Now Playing: Delta wildfire rages through northern California
Now Playing: News anchor whose daughter died of overdose makes public plea
Now Playing: Arrest warrant to be filed for officer who shot man in his apartment
Now Playing: Calif. interstate still shut down for more than 45 miles due to Delta fire
Now Playing: Video shows gunman entering lobby, firing on victims: Authorities
Now Playing: Woman blows off fingers after mistaking stick of dynamite for candle: Report
Now Playing: More denials on anonymous NYT op-ed
Now Playing: ‘If I get impeached, it’s your fault,’ Trump says at rally
Now Playing: Digital Revolution: media and sports stars discuss the impact of social media
Now Playing: Cincinnati police release video showing officers engaging gunman who killed 3
Now Playing: Wildfire rages in California
Now Playing: Police solve double-homicide in under 8 hours: Sheriff
Now Playing: NFL kicks off season in Philadelphia
Now Playing: How kidnapping survivor Abby Hernandez says she kept hope alive during her captivity
Now Playing: South to Midwest facing flash-flood risks due to last bits of Gordon
Now Playing: Officer fatally shoots man after entering apartment she thought was her own: Police
Now Playing: Delta fire in Northern Calif. caused by humans: Authorities
Read More