One of the two blimp hangars in Tustin has burned down. I just drove by them on the way to Micro Center a few weeks ago.
Of the original 17, only 6 wooden blimp hangars still exist in the USA: Moffett Field (2), Tustin, California (1), Tillamook, Oregon (1), Lakehurst, New Jersey (2). There is also the Goodyear Airdock in Akron, Ohio, and a new airship hanger in Germany which was converted into an indoor adventure site after a modern airship company went bankrupt.
https://www.cbsnews.com/losangeles/news/crews-battle-massive-fire-at-historic-wwii-blimp-hangar-in-tustin/