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)
Ohio police officer slain in shooting
An Ohio police officer was killed in a shooting while responding to a domestic incident, authorities said.
0:58 • Source: HLN
Police shootings 16 videos
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)
Ohio police officer slain in shooting
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• Source: HLN
A Weymouth police officer was shot Sunday morning, and police describe the situation as "very critical."
Officer and bystander fatally shot near Boston
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A convicted cop killer is expected to be released from an Orange County prison Friday.
3-time cop killer released on parole
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Sheriff: Murdered deputies best of the best
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Police officers respond to Bennett Place and N. Fremont Avenue after a call went out that an officer is shot Wednesday, Nov. 15, 2017, in Baltimore, M.D.  (Kevin Richardson/The Baltimore Sun via AP)
Police: Officer was killed with his own gun
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Texas Tech police officer fatally shot
Texas Tech police officer fatally shot
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2 Dallas police officers wounded in shooting
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Two Ohio officers shot after 911 hang-up call
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Two law enforcement officers stand guard outside Osceola Regional Medical Center after two Kissimmee police officers were shot Friday, August 18, 2017, in Kissimmee, Florida. Police said one officer was killed and another gravely injured.
Suspect charged in death of Florida officer
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NYPD dispatch captures officer's call for help
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St. Louis police officer shot
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2 officers dead in Orlando manhunt
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Dallas police stand near the scene where four Dallas police officers were shot and killed on July 7.
Cops' families: We worry every day
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