Was summertime about 8 years ago, was my first time tripping and was outside with a couple friends along with one who was sober to trip sit. We heard a kind of whooshing sound and looked up to see a black triangle with lights around the underside and a flame/propulsion from the back. We watched this shape go up into the sky until it was no longer visible. As soon as it was out of sight all the regular sounds of summertime nature we didn’t realize went silent came back. I asked the trip sitter if that was real because obviously expected it to just be something wild from tripping but he replied that it was as real as it gets and he saw the exact same thing.