IF you've ever witnessed anything uncanny -like supernatural/eerie in a cemetery, what all happened?

I worked at cemetery in high school moving lawns and doing maintenance. One day it was a cloudy gloomy day like it was about to rain. I was weed-wacking around the headstones then looked up and in the distance (about 30 yards away) there was a red ballon floating in a perfectly straight path along the walk way as if someone was holding onto it and walking walking with it. The weird thing about it was that there was literally no wind and the ballon was hovering about 5 feet off the ground the whole time. It wasn't even bouncing up and down like they usually do afloat. At the time I was working in the section where they burry toddlers and little kids. So in my head, I pictured the spirit of a little girl holding a ballon carelessly walking down a walkway. Anyways, that kind of creeped me out.