The Cutting EDGE: New Virtual Training Prepares First Responders for Active Shooter Incidents

Aug 3, 2017

Amidst the chaos of an active shooter event, preparedness is key to a seamless, swift and effective response—and a new video game funded by the Department of Homeland Security (DHS) Science and Technology (S&T) Directorate and the U.S. Army Research Laboratory just might do the trick.

Screenshot from the game of a firefighter putting out flames in a hotel.

Enhanced Dynamic Geo-Social Environment, or EDGE, is a virtual training platform, available now to all response agencies nationwide. Built on the Unreal Engine, it allows responders of all disciplines to assume discipline-based avatars and simultaneously role-play complex response scenarios. The first scenario, an incident at a local hotel, brings law enforcement, fire, emergency medical services, dispatch, and unified command together to combat an active shooter also armed with fiery Molotov cocktails.

“We developed the EDGE virtual environment to be completely true-to-life,” explained Milt Nenneman, Program Manager in S&T’s First Responders Group. “Everything from the hotel lobby to the elevators to the boiler rooms to the bedspreads in the guest quarters, was built completely to scale.” The scenario is based on a real hotel in Sacramento, where the program was piloted with local response agencies.

EDGE also features authentic response vehicles, tools, and personal protective equipment. The training is not pre-scripted; most EDGE avatars—including the actual shooter—are controlled by the responders themselves using agency-standard operating procedures to guide all training outcomes. Responders navigate their avatars as they would act in a real emergency, responding to threats according to their department’s policies.”

The beauty of EDGE is it was designed to allow a single agency to train its staff, or multiple agencies can train together across disciplines and jurisdictions for a more synchronized response. And, unlike real-world training exercises, EDGE doesn’t cost money for agencies to travel to a single location—they can conduct the training from their own home stations. The goal: improve coordination and communication before an active shooter or other catastrophic event happens in order to mitigate injuries and loss of lives during a live response.

All actions are determined by first responders’ own decisions in the environment, which means the game can play out differently depending on the specific training exercise and first responders’ actions. Because of the open sandbox, a department’s instructors can create any event or scenario to reinforce their training curriculum.

“These days, it is essential that responders have every tool at their disposal to prepare for and respond to critical incidents,” Nenneman added. “Those first at the scene must make decisions in a flash, and in those initial moments every bit of training helps to save civilian and responder lives.”

Screenshot from the game of an EMS tech carrying another avatar.

S&T and the Army plan to release a second EDGE active shooter training scenario using a school as the backdrop later this year. Like the hotel scenario, the school shooting environment will be available for free to all first responder agencies and personnel charged with school (and student) protection.

“These types of incidents are now an unfortunate reality, and when schools come under fire everybody becomes a first responder,” Nenneman said. “This EDGE scenario was created to train staff on the critical steps to take, whether corralling students for a quick exit to a safe location or barricading classrooms before responders arrive on the scene.”

The EDGE school environment will be released in fall 2017.

Agencies interested in obtaining a free copy of the EDGE hotel scenario or who have general EDGE inquiries may do so by emailing

This post was originally published on the Department of Homeland Security (DHS) blog.