Gang members are suspected in several crimes from Prince William County to Baltimore. In Washington's Trinidad neighborhood, where police are battling an increase in violence this year, young people are wearing the Bloods' colors and flashing their hand signs. However, police say they haven't tied the gang to any homicides in the neighborhood. The Bloods and the Crips, well-known gangs on the West Coast, are a growing concern for law enforcement in the Washington area."We've started seeing more and more signs of the Crips and Bloods -- more Bloods than Crips," D.C. Police Chief Cathy L. Lanier said. "We are seeing a growing presence in the graffiti,...