Martin Kaste Martin Kaste is a correspondent on NPR's National desk.

Weighing Doubts About How Drug-Sniffing Dogs Are Used

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Law Enforcement's Limits To Stopping Shooters

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Gory police dog arrests are now viewable up close on body cameras, dashcams and other video. Police Body Camera/City of San Diego Police Department hide caption

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Police Body Camera/City of San Diego Police Department

Videos Reveal A Close, Gory View Of Police Dog Bites

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Officer Darrell Lobe of the Bothell, Wash. police department "proofs" a hidden-drugs test at the start of a K9 certification. The location of drugs in the vehicles was determined by rolling a die to prevent bias. Martin Kaste/NPR hide caption

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Eliminating Police Bias When Handling Drug-Sniffing Dogs

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How The Texas Church Shooter Was Able To Purchase A Gun

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Police Still Investigating Background Of Driver In NYC Terror Attack

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Police gather at the scene of Tuesday's attack in New York City. Andy Kiss/Getty Images hide caption

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Andy Kiss/Getty Images

"Pedestrian hit"

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Memorials for murder victims have become common sights in some parts of Baltimore. Martin Kaste/NPR hide caption

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Baltimore Police Overhaul Challenged By Murder Crisis

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Trying To Better Detect Potential Mass Shooters After Las Vegas

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Authorities Detail How Shooter Prepared For Attack

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Why Did Stephen Paddock Open Fire On Las Vegas Concertgoers?

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FBI's 2016 Crime Report Reveals Increase In Homicides

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Federal Government Steps Up Disaster Response Efforts Since Hurricane Katrina

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