But Wilson still considers their first test of a partially-downloadable weapon a successful learning experience.

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His Houston socialite lover, Joanne Herring, first made him visit Afghan wounded, implying that helping them was a test of his virility, but Mr Wilson was a pacifist who couldn't bear to shoot a squirrel out of a tree.

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McCready couldn't go to the hospital to spend Wilson's dying hours with him because investigators held her to test her hands for gunshot residue, he said.

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"Students care a lot more nowadays about the economic value of going to business school, " says David Wilson, president of the Graduate Management Admission Council, which runs the standard admissions test.

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That didn't take long -- just days after its first test fire, the Liberator, a 3D-printed pistol designed by Defense Distributed founder Cody Wilson, has caught the attention of the federal government.

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