I had an opportunity to observe (i.e. photography) a Department of Agriculture igniting a prescribed burn through mob up procedures.
35mm Film / 85mm f/1.8 full frame image (no crop)
Kodachrome 25
Tripod
Scanned @ 3200 dpi and saved as .dng format
Post proceed mostly Adobe Camera Raw
Final in PS fine tuning, resizing, unsharpen mask and .jpeg formatting.