Now Playing: News headlines today: Sept. 19, 2018

Now Playing: News headlines today: Sept. 20, 2018

Now Playing: Wisconsin woman disappears after moving to Denver with boyfriend

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Now Playing: News headlines today: Sept. 21, 2018

Now Playing: Northeast bracing for severe weather as winds whip through Midwest

Now Playing: In the wake of attacks on female joggers, how runners are showing they are not afraid

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Now Playing: Retracing missing Tenn. teen, former teacher’s steps after they disappeared

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Now Playing: Georgia school bus driver allegedly forced white students to stand on a moving bus

Now Playing: A brother and sister, separated their entire lives, reunite at last

Now Playing: Suspect arrested in alleged deadlly stabbing of jogger in Washington, DC