The Annual Friends of Sleeping Bear Dunes (Friends) training is scheduled for May 18, at the Empire Town Hall.The training begins with a general orientation at 1 p.m., which is applicable for all volunteers, both experienced and new. This training is a once-a-year chance for volunteers to hear the latest park news from park staff. The 1 p.m. general training will be followed by 2 p.m. breakout…