Tonight at 9 p.m.

 UPDATED 7:35 AM HST Sep 19, 2014

20/20

NEW
The investigation that led to the arrest of Mohammed Whitaker, a man accused of shooting at vehicles during rush hour traffic; potentially hazardous guardrails; a trucker discusses the perils of his job.

The hourlong broadcast includes insightful interviews with notable figures from the worlds of news, politics and entertainment, hosted by Elizabeth Vargas and Chris Cuomo. A revolving team of journalists from ABC News also contribute investigative stories.

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