The document provides guidance for first responders arriving at a homicide crime scene. It outlines important initial steps such as securing the scene, determining if the victim is alive, apprehending suspects, and detaining witnesses. Officers are instructed to protect the integrity of the crime scene to avoid compromising evidence. The acronym A-D-A-P-T is presented as a mnemonic for priorities at a crime scene: arrest the perpetrator if possible, identify and detain witnesses, assess the scene, protect the scene, and take notes. Scene protection is paramount as the initial response can significantly impact the subsequent investigation.