EL CENTRO, CA - JULY 31:  Memorial Services take place for Border Patrol Agent Robert Rosas, the victim of the first fatal shooting of a U.S. Border Patrol agent in more than a decade, on July 31, 2009 in El Centro, California. The 30-year-old father of two small children was killed on July 23 when he tracked a suspicious group of people alone in the bush-covered hills along the U.S.-Mexico border near the rural town of Campo, some 60 miles east of San Diego, California. Rosas had been with the agency for three years. Getty Images logo Getty Images 31 months ago

EL CENTRO, CA - JULY 31: Memorial Services take place for Border Patrol Agent Robert Rosas, the victim of the first fatal shooting of a U.S. Border Patrol agent in more than a decade, on July 31, 2009 in El Centro, California. The 30-year-old father of two small children was killed on July 23 when he tracked a suspicious group of people alone in the bush-covered hills along the U.S.-Mexico border near the rural town of Campo, some 60 miles east of San Diego, California. Rosas had been with the agency for three years.