Homeland Security Agencies Work To Secure U.S.-Mexico...

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Maintenance workers prepare a blackhawk helicopter from the U.S.... News PhotoCrime,Government,Helicopter,Horizontal,Justice - Concept,Law,Occupation,Politics,Preparation,Sikorsky UH-60 Blackhawk,Tucson,USAPhotographer Collection: Getty Images News 2013 Getty ImagesNOGALES, AZ - FEBRUARY 26: Maintenance workers prepare a blackhawk helicopter from the U.S. Office of Air and Marine (OAM), on February 26, 2013 in Tucson, Arizona. The OAM, a U.S. Customs and Border Protection agency, flies over the U.S.-Mexico border searching for drug smuglers entering the United States from Mexico. (Photo by John Moore/Getty Images)