**Appendix A**

*Appendix A.1. Scenarios, 3LC Exercises, Bangkok, Thailand*

#### *Scenario 1: A bomb*

On 15 September 2017, the dispatch center contacted and informed you about a Bomb found 5 km from your hospital. There was another hospital 200 m next to the scene. More than 100 people were injured. Mange situation based on CSCATTT.

Around 30 min after the first contact, a second bomb is found at the middle of the scene. How would you manage the scene now?

#### *Scenario 2: A Fire in a Tall Building*

On 15 December 2017, the dispatch center contacted and informed you that there was a fire on the fifth floor of an 11 floors apartment 5 km away from your hospital. More than 50 people were injured. How do you manage the situation based on CSCATTT?

Around 30 min after the fire incident and when there is a crowd and gathering of people, a truck drives into the treatment zones inside the area, and hit many people.

#### *Scenario 3: Riot and Active Shooter*

On 15 May 2015, you were on a night shift at the hospital and saw Riots on the news; the place of the incident was 5 km from your hospital. Some people starts shooting and ambulances started and kept bringing injured people to your hospital. How would you manage your emergency department based on CSCATTT?

One of the injured victim had a bomb strapped on his chest. How would you manage the situation? Would you evacuate your emergency department?
