I'll give you an example.
A couple of months ago we had a report of smoke in residence at the extreme northern part of the district, within a 1/2 mile of station that rarely sees it's engine get on the air. When one of our members signed on the air I directed him to head north and pick up that engine rather than going to the closest station to him at that point and getting that engine up.
It actually was quicker as he could make better time in his POV and we were able to meet the requirement for the once a year minimum response for that engine and station.
He got the engine up and he arrived just behind the first-in engine from Central Station.
In the event that somebody responds to a station, and the call is cancelled prior to the engine signing on the air we can document that the truck was in the process of responding, but the call was cancelled prior to it's signing on the air.