April 18, 2018 9:13 pm Slain Sgt. Sean Gannon's K9 Partner Leaves Hospital Nero was released from the hospital on the same day Sgt. Sean Gannon was laid to rest. US & World Videos 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments 0:16 4 people seriously hurt after boat sinks off Cape Cod 2:35 Fallen Billerica police sergeant honored during vigil 2:09 President of MIT calls for shutting down pro-Palestinian encampments