A crisis actor (aka actor-patient or actor victim) is a trained actor, role player, volunteer, or other person engaged to portray a disaster victim during emergency drills to train first responders such as police, firefighters or EMS personnel. Crisis actors are used to create high-fidelity simulations of disasters in order to allow first responders to practice their skills and help emergency services organizations to prepare and train in realistic scenarios as part of full-scale disaster exercises.[1][2][3][4][5][6]