Sen. Elizabeth Warren, D-Mass., honored Yarmouth police Sgt. Sean Gannon in a speech on the floor of the U.S. Senate on Thursday morning.

On April 12, “our Commonwealth suffered a terrible loss when Sgt. Sean Gannon of the Yarmouth Police Department was killed while serving an arrest warrant” at a house in Marstons Mills, according to a transcipt of her remarks released by her office.

She noted Gannon’s work as a K-9 officer - and as the department’s first full-time K-9 narcotics officer - and the wounding during the shooting of his K-9 partner, Nero.

“Sgt. Gannon had a huge heart and spent his free time volunteering with Big Brothers, Big Sisters, traveling, enjoying the outdoors, and working with his hands,” Warren said.

Gannon was one of six Massachusetts police officers Warren recognized as part of National Police Week. Five of those officers who died were added this year to the National Law Enforcement Officers Memorial. Gannon’s name will be added next year, Warren said.