At the heart of their safety and success lie the relationships law enforcement officers have built. As law enforcement has risen to each new challenge in the wake of active shooter and mass casualty incidents, training and tactics have necessarily evolved. Key to this evolution is the willingness to use methods and resources that once seemed unthinkable.The dissection of past events has revealed the need for a rapid emergency medical response during active shooter incidents. In Aurora, Colorado, officers dragged victims to squad cars, transporting them to emergency rooms. In San Bernardino, California, responders were faced with dozens of victims and only one tactical medic to accompany the tactical officers into the scene. Historically, emergency medical responders stage in a safe area and remain there until the scene is declared “safe” to enter. In active shooter incidents—where information is often conflicted, areas are large, and victims are many—waiting for a “safe” declaration may mean the difference between life and death for injured officers or civilians.