Now Playing: At least 20 hurt when metro station escalator in Rome speeds up

Now Playing: Apple announces it has fixed group Facetime glitch

Now Playing: Daughter of BTK serial killer: ‘I still love my dad today’

Now Playing: Fans injured when escalator malfunctions at basketball game

Now Playing: Man allegedly faked a fall for insurance money: Prosecutors

Now Playing: Cory Booker joins pack of Democratic presidential hopefuls

Now Playing: Officer under fire for ‘racially insensitive’ Snapchat post

Now Playing: Trump says he is ready to take drastic action on border wall

Now Playing: Temperatures set to rise in Midwest after arctic weather

Now Playing: Calls for Virginia governor to resign amid blackface scandal

Now Playing: 5 Chinese-American vets awarded the Congressional Gold Medal

Now Playing: Behind the scenes of Atlanta’s Super Bowl security joint operations center

Now Playing: Trump weighs his options for border wall amid bipartisan negotiations

Now Playing: Navy to honor its 1st female jet pilot with historic all-female flyover

Now Playing: Bear helps itself to dog food from Florida home

Now Playing: 62-year-old man ‘frozen solid’ when he was found dead in Wisconsin backyard

Now Playing: Man accused of selling nearly $1 million worth of fake Super Bowl tickets

Now Playing: Record-low temperatures, lake effect snow continue to pummel Northeast

Now Playing: ICE confirms force-feeding of detainees

Now Playing: Seals storm California beach closed to the public during gov’t shutdown