This from Asher Heimermann:

The Zion Emergency Services and Disaster Agency (ESDA) was originally founded as the Zion Civil Defense Agency. The name has changed but the goals have remained the same, to prepare the City of Zion and its residents to cope with any disaster or emergency that may arise. ESDA falls under the City of Zion Fire/Rescue Department with Fire Chief John Lewis functioning as the ESDA Coordinator.
Zion Civil Defense Agency

Asher Heimermann photo