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The article gives the names of the victims, were they related?
The coroner’s statement said that the man, 18-year-old Leslye M. Harbin Jr., died of multiple gunshot wounds at the scene, while the two women, 33-year-old Antwanette Chillers and 29-year-old Raysa Pacios Valdes, each died of a gunshot wound at a hospital.
An assembly line robot (like welding or material handling, I’ve worked with ABB, Fanuc, Motoman, Panasonic) are still called robot “arms” with the end portion often called the “wrist” so there is a degree of anthropomorphizing even if it’s not the whole body. And they do resemble an arm, however with 6 axis motion the motion is more like from your hips to your wrist than shoulder to wrist.