USFS/CalFire use a aero commander oout of the grass valley atb...the USFS use it as a spotter/birddog...and on large fires it is used as a lead..they also use it at times like today,with all the lightning strikes yesterday in norcal,it would be up today looking for smokes...i had the USFS channels turned off on my scanner..so i heard nothing..
We use them here in Canada as well. They're owned/operated by a group called Discovery Air, a couple of weeks ago we had a large grass fire that was spreading quickly in very dry conditions so 2 CL-415s were dispatched to deal with it and the Aero Commander was the "birddog"....they did a fantastic job. I was suppose to go take pictures of the CL-415s and the Aero Commander that weekend for a few FSX/P3D projects (including Carenado's AC500) but they were reassigned to another area at the last minute, hopefully they'll be back soon so I can get it done! https://www.facebook.com/media/set/?set=a.10153378101578777.1073741843.504268776&type=1&l=c77888f023