PHOTO: CPR is a life-saving technique -- but you may be surprised by how many people don't actually know how to perform it. That's why every year, members of the Milwaukee Fire Department travel the city, teaching CPR to students. In 2018, a new state law goes into effect, requiring Wisconsin students to have CPR training. But the students at Divine Savior Holy Angels High School have been learning the technique for years. "We wanted to create a bigger awareness," said Angela Hutchinson.