The US Marshals’ office said a Connecticut man who allegedly killed two brothers in February could be in metro Atlanta. They are now offering a $5,000 reward in the case. Russell Smith, of Windsor, Ct., is the main suspect in the double murder of brothers Aaron Walker and Franklin Spencer that happened outside a bar in Bloomfield, Ct. on Feb. 22. Smith is currently charged with two counts of murder with a court set bond of $5 million. They said…