The Sister Bay & Liberty Grove Fire Department will offer classes to educate the community in the proper method of using an AED and performing CPR. The four-hour class will teach infant, child and adult CPR and offers a two-year certification. Classes are offered at the Sister Bay Fire Station on Mill Road on April 21 and May 19, 6 – 10 pm. The cost is $20. To register, call 920.854.4021 and leave a message or email [email protected].