A soft sizziling. The surrounding environment was completely silent (as we were out coyote hunting). The object appeared directly in our field of vision and flew directly over our heads.
Delayed Sound
Observation
Yes
Remarks
About 5 - 10 seconds after the object disappeared from our view (we tracked it from our 12 o'clock to our 6 o'clock visually) we heard a booming noise in the direction of where the object disappeared.
Persistent train
Observation
Yes
Duration
5s
Length
8°
Remarks
3 separate but noticeable glowing orange trails following directly behind the object.