I'm unfamiliar with thermal camera technology but in that video it looks like the engine was on fire before it hit the person. I don't think fan air would be hot enough for that effect in the video, I'd happily listen to someone with more knowledge. I'll also say the source I read saying it was a female was incorrect, apparently the person was a male and has been identified and it's being described as a suicide. The picture the news showed was a dude with a goatee. Suicide by runway is an odd choice, maybe it was easier than buying a gun in CO.