Kansas City and its firefighters are going to keep on talking. The sides in the labor dispute have agreed to submit their wage dispute to federal mediation. In so-doing, the sides agree to extend the existing labor agreement, which had been set to expire at midnight last night. It will stay in effect until June 30th. Thecity has offered 4-percent pay hikes to some firefighters and 2-percent bonuses to others. The union wants pay increases of 4-percent and 2-and-a-half percent.