How does a firefighter "recover" after being knocked down?
This seems to be pretty explicit in the version of the rules I have, found here. Under Knocked Down in the Experienced Rules, it very specifically states:


  When a Firefighter is Knocked Down, the Firefighter is placed in one of the two spaces of the Ambulance's current Parking Spot.


My interpretation of this is that the Firefighter has to go to where the Ambulance is parked, since the Ambulance can only have one current Parking Spot when a Firefighter is knocked down. So you shouldn't have to get the Ambulance moved to where the Firefighter goes because the Firefighter should already be going right to the Ambulance.