Sunnyvale Department of Public Safety (SVDPS) Officers were dispatched to an apartment on Weddell Drive on October 31, 201 7 on a report of a domestic related stabbing. Once at the scene, contact was made with the victim of the stabbing, Jane Doe. Officers were informed the suspect of the stabbing, Jesus Virelas Contreras Jr. (aka Jesus Birelas Contreras), had barricaded himself in the home of the victim and refused to leave. While attempting to contact Mr. Contreras, Public Safety Officer (PSO) Eckford's canine, Jax, was deployed into the residence. Mr. Contreras stabbed the canine numerous times requiring PSO Eckford to enter the residence to attempt to rescue his dog. Several other officers followed into the residence and attempted to convince Mr. Contreras to submit. Mr. Contreras assaulted officers with a knife prompting Lt. Larkin to fire twice striking Mr. Contreras once and causing his death.