Sean Gannon October 26, 2018 9:50 am Retired Officer Honored for Saving Slain Sgt.'s K9 Months after Sgt. Sean Gannon was killed in the line of duty, retired officer Peter McClelland is being honored for saving the slain sergeant’s K9 partner. US & World Videos 1:04 Police investigate killings of 2 swans in Westford 3:22 Ethan Hawke at Coolidge Corner Theatre for ‘Wildcat' screening 2:22 House passes TICKET Act targeting concert, event hidden fees 2:21 Jennifer McCabe, woman with Karen Read when John O'Keefe's body was found, testifies 4:36 ‘I felt like I was going to die': Mass. school violence victim speaks