The two officials, who spoke on condition of anonymity because they were not authorized to discuss the case, said 66-year-old Johnny Lee Wicks opened fire with a shotgun at a security checkpoint, touching off a running gunbattle with deputy U.S. marshals. .... In a handwritten lawsuit filed in March 2008, Wicks complained that his Social Security benefits were cut following his move and accused federal workers of discrimination because he is black. "This case from the start was about race," Wicks wrote in the seven-page complaint, which has occasional spelling and grammatical errors. "Lots of state worker(s) and agencies have...