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PHILADELPHIA, PA - MAY 13: Investigators and first responders work near the wreckage of Amtrak Northeast Regional Train 188, from Washington to New York, that derailed yesterday May 13, 2015 in north Philadelphia, Pennsylvania. At least six people were killed and more than 200 others were injured in the crash. (Photo by Win McNamee/Getty Images)
PHILADELPHIA, PA - MAY 13: Investigators and first responders work near the wreckage of Amtrak Northeast Regional Train 188, from Washington to New York, that derailed yesterday May 13, 2015 in north Philadelphia, Pennsylvania. At least six people were killed and more than 200 others were injured in the crash. (Photo by Win McNamee/Getty Images)

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Gaby Rudy speaks with CNN's Don Lemon about what it was like in the moments after an Amtrak train derailed in Philadelphia.

Survivor: 'Such a state of panic and shock'

Gaby Rudy speaks with CNN's Don Lemon about what it was like in the moments after an Amtrak train derailed in Philadelphia.