 For NPR News in the Twin Cities, I'm Emily Reese. Leaders with the Minneapolis Park Workers Union and Park Board staff are back at the negotiating table today. It's the first time both sides have met with a mediator in more than two weeks, and since a number of workers walked off on the 4th of July, kicking off the first strike in the park's history. The union's business manager, A.J. Lang, says he's optimistic they'll reach an agreement today, but for the time being, the picket lines remain.