<P> U.S. Border Patrol helicopter along El Camino del Diablo, Arizona--Sonora border, 2004 </P> <Li> <P> Border between Nogales, Arizona, on the left, and Nogales, Sonora, on the right </P> </Li> <P> Border between Nogales, Arizona, on the left, and Nogales, Sonora, on the right </P> <Li> <P> On the left: Nogales, Arizona; on the right, Nogales, Sonora </P> </Li>

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