This exploratory, qualitative research study examined the attitudes and barriers police officers identified in successful implementation of the lethality assessment protocol (LAP), a collaborative intervention between police departments and domestic violence advocacy agencies in the state of Connecticut. Focus groups were conducted at three police departments to ascertain officers’ perceptions of the LAP. Officers (N = 22) were recruited through an individual contact at each department. Responses to focus group questions indicated both system-wide and individual police department barriers. Results showed officers generally support the protocol and believe it has beneficial intent and purpose. Obstructions identified include timing of the implementation, lack of victim cooperation, and agency culture. Implementation barriers and officers’ attitudes are discussed.