(NEWSER– Another detail in the case of the 13-year-old boy who was shot when police officers spotted him holding a pellet gun: The sheriff's deputy who shot Andy Lopez Cruz is a gun expert and firearms instructor, the San Francisco Chronicle reports. Erick Gelhaus hunts; he's been to war; he teaches fellow officers at the department's gun range and also teaches gun classes for the general public; he's had special firearms training and is a "range master." In law enforcement magazines and on online forums, he frequently discusses guns and promotes officer safety.

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