Retired city police officers and firefighters have lost their attempt to escape the six-year-old state pension overhaul engineered by then-Rhode Island General Treasurer Gina Raimondo. And active-duty police officers and firefighters have been dealt a setback. Two labor unions representing Cranston public safety employees took their struggle over watered-down pension benefits to a new battlefield, U.S. District Court in Providence. And Senior U.S. District Judge Mary M. Lisi has issued a split decision. In the first part, Lisi declared that the unions lack legal standing to represent the retirees. So the retirees must take the watered-down benefits.