Aircraft hangers are usually very large simple buildings that house millions of dollars worth of airplanes. A small fire can quickly damage the contents of the building. Fuel storage containers are pretty scary when they burn out of control. The key is to have a fast reaction to fire and hit it with an effective suppression material. These videos are interesting due to the large scale. I think they could rent out some of these hangers out as after hours foam rave clubs. 🙂