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Caption:PHILADELPHIA, PA - MAY 13: A man walks past a police truck with its flickering blue lights near the wreckage of an Amtrak passenger train that derailed carrying more than 200 passengers from Washington, DC to New York on May 13, 2015 in north Philadelphia, Pennsylvania. At least five people were killed and more than 50 others were injured in the crash. (Photo by Mark Makela/Getty Images)
Caption:PHILADELPHIA, PA - MAY 13: A man walks past a police truck with its flickering blue lights near the wreckage of an Amtrak passenger train that derailed carrying more than 200 passengers from Washington, DC to New York on May 13, 2015 in north Philadelphia, Pennsylvania. At least five people were killed and more than 50 others were injured in the crash. (Photo by Mark Makela/Getty Images)

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    Rise in deadly attacks on police nationwide

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Rise in deadly attacks on police nationwide

CNN's Brian Todd reports on the disturbing rise in police officers killed recently, with over 24 cops killed this year.

Rise in deadly attacks on police nationwide

CNN's Brian Todd reports on the disturbing rise in police officers killed recently, with over 24 cops killed this year.