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A fireman fights a massive fire at "La Primavera" forest in Guadalajara, Mexico, on April 22, 2012. More than 200 firefighters were sent to the site where the fire has been burning uncontrolled for more than 27 hours and has consumed over 800 hectares so far.
There's one group of people with permission from the United States to freely — and legally — cross the US-Mexico border without passing through a formal border crossing. It's a crew of firefighters from Mexico that authorities say are among the best in the world in fighting wildfires.
Lorne Matalon from the Fronteras Desk reports from the U-S/Mexico border in west Texas.