Over the last two years, the Dallas Police and Fire Pension System's unfunded liability grew from a constant source of frustration into an existential threat to the city of Dallas. Because of changes in federal accounting rules and the hits on the city's bond rating, the DPFP's multibillion-dollar unfunded liability placed the city's continued solvency at risk. Something had to be done, and, thanks to a shove from Texas state Sens. Royce West and Don Huffines, pensioners agreed to a deal that cuts benefits for retirees and increases city contributions to the fund for the next several decades. The fix leans heavily on police and is no sure thing, but it represents the biggest step taken to fix the fund in decades.