Now Playing: News headlines today: April 30, 2019
Now Playing: These 3D pop art bags look like paper
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Now Playing: It’s Morning, America: Tuesday, April 30, 2019
Now Playing: Biden on how he’s different from Obama, 2020 contenders
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Now Playing: ISIS leader vows to keep fighting in new video message
Now Playing: Joe Biden takes responsibility for treatment of Anita Hill
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Now Playing: Larry King undergoes heart procedure
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Now Playing: Last day to see the remaining 2 giant pandas
Now Playing: BYU student comes out during commencement speech
Now Playing: Fatal chopper crash in Hawaii
Now Playing: 3 killed after helicopter crashes on residential street in Hawaii
Now Playing: 2 sixth-graders accused of planning to gun down students at school
Now Playing: Nurses storm Washington to support ‘Medicare for all’ legislation
Now Playing: Students deck out dome with Captain America shield
Now Playing: ‘Boyz N the Hood’ director John Singleton dies after suffering major stroke
