In the fictional town of Pawnee, Ind., home of the NBC television series “Parks and Recreation,” the town slogans can be a hoot. One sign reads, “Welcome to Pawnee: It’s safe to be here now.”The Great Bend Recreation Commission has tried a few slogans over the years, encouraging people to “rec your life with fitness, rec your life with fun,” and so forth. But one phrase that has been in use for more than 30 years still rings true: “Life.