I imagine it sounds like a Ju87 Stuka dive bomber.
These fanged flying machines fly over the waist land endlessly, always looking for prey. Looks like someone managed to shoot one down. Ether that, or the machine spotted it's next victim.
There's a story here somewhere. I'm still trying to find it. Let me know what you guys think in the comments. If you like this sort of thing feel free to upvote and follow. I'm always posting weird stuff on here.