The image used in the thumbnail and more images from the event with Fire Force voice actors and the Tokyo Fire Department can be found here: https://natalie.mu/comic/news/322250
More links and timestamps below.

The Japanese interview with Oukubo Atsushi: https://natalie.mu/comic/pp/enennosho...
The 1946 article on the US Military firefighting brigade: https://www.fireengineering.com/artic...


0:46 Oukubo Atsushi’s influences in creating Fire Force
1:33 Edo Period firefighting
3:10 World War II bombing of Tokyo and the firefighting response
4:42 The modern Tokyo Fire Department
5:33 Conclusion