U.S. Department of Homeland Security. (n.d.). Enhanced Dynamic Geo-Social Environment (EDGE). (Accessed 11/21/2018.)
EDGE is a free (to U.S. agencies) multiplayer, scalable, online training program that allows first responders to role-play complex response scenarios. It can be used by single agencies or across agency, jurisdiction, or discipline. The first scenario features an active shooter incident at a local hotel.