+1 to this. I think it was 4 years back, the oil prices dropped hard and the airlines bought futures quantities in large supply to hedge for future needs. It was a smart strategy
One is good (gas prices), but I'm skeptical that the other is even a black swan. Global pandemics have happened before (Spanish Flu), and airplanes have been grounded for a week in recent history followed by weak demand (9/11), but last I checked, planes have still been flying.