hnews_0519_Lifeguard_Training_05
David Tulke (front), 19, and Emma Hryniewicz, 17, both of Crystal Lake, practice CPR on mannequins for lifeguard training at Main Beach on Saturday, May 19, 2018 in Crystal Lake. Main beach will open next weekend, on Saturday, May 26. This summer will be Tulke's third season and Hryniewicz's second season as lifeguards at Main Beach.