Members of the International Association of Machinists and Aerospace Workers went on strike Monday at jet engine maker Pratt & Whitney in Connecticut, as negotiations over wages, retirement benefits and job security broke down.

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About 3,000 labor union members went on strike early Monday at jet engine maker Pratt & Whitney in Connecticut, as negotiations over wages, retirement benefits and job security broke down. Members of the International Association of Machinists and Aerospace Workers were picketing at manufacturing locations in East