A couple engine fires a year in the US commercial world and if memory serves, about the same in USAF.
https:// www.ntsb.gov/Search1/pages/Results.aspx?k=engine%20fire
Not much heat in the fan section. And if there'd been an explosion, Titanium burns.
A fan blade failed due to LCF outside of predicted life cycles. Known issue and FAA had already issued a proposed rule to perform ultrasonic inspection of all blades at next shop visit.