TTXs can be conducted using a single group that includes all participants or using breakout groups (e.g., utility and response partners split into functional areas). They can last anywhere from 4-8 hours depending on the type and complexity of the scenario. TTXs require the development of several documents, including a Situation Manual (SitMan). The SitMan provides background information on the scope, schedule and objectives for the exercise. It also presents the exercise scenario narrative for participant discussions. A PowerPoint presentation can also be developed to help facilitate the exercise. The facilitator or EDT will also need to be responsible for inviting the appropriate personnel, reserving a conference room and developing the SitMan.

After completing the TTX, the facilitator will develop the After Action Report (AAR) and Improvement Plan (IP). The AAR and IP outline the proposed actions and improvements based on the TTX. See Step 8 of this module for additional information on the AAR and IP.