'Parks and Recreation' facing changes and crossroads

Cast departures and a prominent place on NBC's Thursday lineup make the sixth season of 'Parks and Recreation,' the-little-show-that-could, a challenging time.On a scorching August day in Studio City, Metro buses screech down Ventura Boulevard stamped with NBC advertisements boasting its revamped Thursday block: "NBC's New Family of Comedies." Inside Stage 21 on the CBS Radford Studios, the "Parks and Recreation" cast — the well-tested denizens of said night — appear unfazed by the burden th...