Chris Cassidy: SpaceX launch is "a gigantic deal," "very confident" crew will arrive safely

Chris Cassidy: SpaceX launch is "a gigantic deal," "very confident" crew will arrive safely

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International Space Station Commander Chris Cassidy talks to Tony Dokoupil as he prepares to welcome the first astronauts to launch from U.S. soil since the end of the Space Shuttle Program in 2011.