KAG, many, and I mean many years ago, I was offered a job with Goodyear as one of their Blimp/Airship pilots. I turned down the job when informed of the time on the road that was required, as I had just gotten married.
At that time, all blimp/airship pilot training was in house with Goodyear. Now I've been told, the training is either in house with the company or with airship manufacturer.