WCAU June 27, 2018 6:23 am Tune Up Your Air Conditioners for Coming Heat Wave The summer’s first heat wave is expected to start this Friday, so now is the time to make sure your air conditioners are ready when the temperature rises. US & World Videos 2:54 Penn leaders reiterate to pro-Palestinian protesters that they need to pack up camp 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 1:30 Protests calling for ceasefire continue at Penn 6:33 Family affair: Former Eagle and new Eagle Jeremiah Trotter and Jeremiah Trotter Jr. speak out 0:20 Teen girl shot in Southwest Philly, suspect in custody