SILVER SPRING, Md. -- A federal security officer suspected in three fatal shootings outside a high school, a mall and a supermarket in the Washington, D.C., area was arrested Friday, police said. Three people were also wounded in the shootings. Eulalio Tordil, an employee of the Federal Protective Service, which provides security at federal properties, was taken into custody without incident near the supermarket, the scene of the last shooting, authorities said. The brief manhunt and seemingly indiscriminate shootings rekindled fears of the D.C. sniper in 2002, which paralyzed the nation's capital and its suburbs.