Now Playing: Death toll hits 62 after migrant-smuggling boat crashes off Italian coast

Now Playing: Climate activists protest during UN Assembly

Now Playing: Ukranian forces strike Russia's Navy headquarters

Now Playing: Alejandro Mayorkas set to meet Honduran president on border crisis

Now Playing: Skydiver lands on inflatable unicorn

Now Playing: ABC News Live Prime: Fri, Sep 22, 2023

Now Playing: COVID hospitalizations on the rise

Now Playing: Canada-India relations deteriorate over killing of Sikh separatist leader

Now Playing: Sen. Bob Menendez indicted on bribery charges

Now Playing: Could the moon be a home to humans?

Now Playing: Migrant crossings surge at US southern border

Now Playing: President Zelenskyy’s plea for more funding amid possible government shutdown

Now Playing: Ukrainian President Zelenskyy’s in-person plea for more funding

Now Playing: President Biden meets with Ukraine’s Zelenskyy at White House

Now Playing: Wife of Iranian president discusses controversial hijab law

Now Playing: Rep. Spartz discusses top issues in Congress, including McCarthy’s future

Now Playing: Zelenskyy lobbies Congress for further aid to Ukraine

Now Playing: 'Humanity has opened the gates of hell,' UN secretary-general says of climate urgency

Now Playing: At least 5 Ukrainian cities targeted by Russian missile strikes

Now Playing: Biden to meet with Zelenskyy