With the end of summer, many North Africans are heading back to Europe. But US and European officials are worried that the traffic across the Mediterranean may include more than vacationing families returning from summer holidays. Terrorist activity in North Africa has been on the rise over the last year. Al Qaeda is reportedly active in the region as well. The World's Gerry Hadden reports from the Spanish port of Algeciras, just across the straits of Gilbraltar from Morocco. Photos: Gerry Hadden.
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