What factors should the responding officer consider when he realizes that he is on a “hot” call– a potentially dangerous situation that is currently unfolding?

Officers are trained to handle emergencies first, before securing the crime scene, even if valuable evidence could be lost or destroyed. Why is this critical? What factors should the responding officer consider when he realizes that he is on a “hot” call– a potentially dangerous situation that is currently unfolding? Which one of these factors played the biggest role in your decision-making and why? Integrate a Christian world view perspective to support your discussion.