1. Master Scenario Events List (MSEL) Conference DATE
EXERCISE NAME
Master Scenario
Events List (MSEL) Conference
DATE

2. What Is a Master Scenario Events List?
Chronological listing of scripted events that generate activity in specific functional areas in support of exercise objectives
Functional exercise (FE) – Drives participant play
Full-scale exercise (FSE) – Supplements active play
Contains injects
Scenario events that prompt players to implement the plans that the exercise is designed to test
Short MSEL – lists the inject, delivery time, short description, responsible controller, and receiving player
Long MSEL – detailed description, exact quotes and formats for inject, and description of expected action
Talking Points
The MSEL Contains a chronological listing of events and injects that drive exercise play.
Injects are representative actions and scenario elements that drive the exercise play.
Each MSEL record includes:
Designated scenario time – the times listed in a MSEL should reflect the time an inject should occur
These times should be as realistic as possible.
They should be based on input from functional area representatives.
Event synopsis
The controller responsible for delivering inject, with controller/evaluator special instructions (if applicable)
Expected action – the player response expected after a MSEL inject is delivered
Intended player – agency or individual player for whom the MSEL inject is intended
Objective to demonstrate (if applicable)
Notes section (for controllers and evaluators to track actual events against those listed in the MSEL, with special instructions for individual controllers and evaluators)
If events occur sooner than anticipated, it should be noted in the notes section, but play should not be interrupted.
The MSEL injects do three things:
Link simulation to action
Enhance exercise experiences for players
Reflect an incident or activity that will prompt players to implement the policy or procedure being tested
Example
To determine when triage and treatment should be established during the exercise, input should be gained from an EMS or hospital representative.

3. Elements of an Inject Designated scenario time Event synopsis
Controller responsible for delivering inject
Expected action
Intended player
Objective to be demonstrated
Notes section
Injects should include the following elements:
Designated scenario time – when the event should take place
Event synopsis – what will occur
Controller responsible for delivering inject
Expect action – what action will the players take
Intended player – who should receive the inject
Objective to be demonstrated – which one of the objectives does this inject drive
Notes section – blank space for the controllers to enter notes.

4. Types of MSEL Items Contextual Injects Contingency Injects Lessons
Controller to player
Build contemporary operating environment
Contingency Injects
Events communicated to players if they do not occur
Necessary for play to continue and reach exercise objectives
Lessons
Learned:
When reading message injects, simulators should be as realistic and emotional as possible.
There are three types of injects, according to the HSEEP volumes.
Contextual Injects
Controller to player
Build contemporary operating environment
For example, “The temperature is 72 degrees Fahrenheit”
Expected Action Events
Holding place in MSEL
Notify controllers when an expected action would typically occur
For example, “10:20am Establishment of on-scene incident command”

5. Types of MSEL Items Expected Action Events Holding place in MSEL
Notify controllers when an expected action would typically occur
Contingency Injects
Controller to player
Events communicated to players if they do not occur
Necessary for play to continue and reach exercise objectives
For example, if a hospital playing in the exercise is not notified of the incident, the controller might place a call from a worried witness to the emergency room, complaining of symptoms.

6. How to Develop a Master Scenario Events List
Review exercise objectives and scenario
Develop a timeline of anticipated player actions
Identify a chronology of key actions that must occur, either scripted or actual
These can be accomplished by function and/or jurisdiction
Develop these using a MSEL program
Compile all MSEL events into a single list and vet with participants
Refine selected MSEL events and complete long version
When developing a MSEL, consider the following steps:
Review scenario and exercise objectives
Develop a timeline of anticipated player actions
Identify a chronology of key actions that must occur, either scripted or actual
These can be accomplished by function and/or jurisdiction
Develop these using a MSEL program
Compile all MSEL events into a single list and vet with participants
Refine selected MSEL events and complete long version

7. Americana Master Scenario Events List
A sample MSEL can be found in your activity workbook for an Americana exercise.

8. Scenario What are the assumptions / artificialities of the scenario?
Will we play real world weather conditions?
Will we use an artificial exercise date?
Will we operate on compressed time or real time?
Will we replicate real world or artificial distances
in the interest of time?
Which agencies should participate notionally?