Better watch out Mel or the same might happen to you if you don't lay off the bottom shelf rot gut.
Why the hell does everyone have to attribute stuff like this to aliens, secret military operations, ghosts or fucking bigfoot? Why......because we are stupid and we're always looking for the lowest and most sensationalized form of entertainment imaginable.
No mystery here, it's just a bunch of stupid college kids, being stupid and they paid the ultimate price for their stupidity. It happens all the time and in fact, when I look back, it's a wonder I'm alive.