A former head of the State Pensions Commission is endorsing Republican Gray Noll in the 50th Senate district race. Noll is running against Sen. Sam McCann for the seat being vacated by Larry Bomke, and the two candidates disagree on the best approach to fix the state's pension crisis. But state retiree and former pensions commission chairman Bob Caldwell says Noll's approach makes the most sense. Noll says it's unfair and unconstitutional for the state to renege on promised benefits. He says pension liabilities can be brought under control if the state halts all new spending and devotes new revenues to fixing the problem.