One of the most difficult tasks to perform is deciding when and how to begin scaling down resources. It may be a matter of gauging the frequency of arriving victims, or reports from the IOA that all patients have been evacuated. When deciding how many units should remain on-scene, remember to factor in resources to cover responder safety as well. At all times, during the active incident or during demobilization there should be adequate assets to deal with potential injuries or illnesses to responders.
A good rule for demobilization is: the moment you mobilize an asset, make plans for its demobilization. Assets are not just defined as personnel but equipment as well. Gauge the support required for each resource whether it be fuel, refrigeration, food, or sleeping quarters. Every resource requires some support. It is up to you to decide if the support is worth the advantages of maintaining the resource.
Regardless, demobilization should be thoughtful and orderly. Rapid demobilization may present a hazard for responders and the community.