NBCUniversal August 7, 2017 6:35 pm Police Issues Kits to Officers After Hazardous OD Call After three officers were hospitalized for fentanyl exposure while responding to an overdose call, police in Chelsea, Massachusetts, must now carry protective equipment. US & World Videos 2:04 Newton dentist office aiming to keep kids comfortable 2:08 Tension grows over campus protests in Boston 1:53 Opening statements begin in the Karen Read trial 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments