What does it mean to “play” in the exercise? How is exercise play prompted and regulated?
Play is the term used to describe how personnel from a variety of agencies and organizations act out the response to the scenario, as though it had actually occurred. Players are fed information by exercise controllers, based on a Master Scenario Event List (MSEL). The MSEL contains a number of key events that trigger the need to make decisions and conduct activities to exercise specific agency capabilities and achieve the exercise objectives.
