15-ft balloon-shaped object moving with wind seen in clip released in 4th set of UFO files

The fourth set of US UFO files includes the video of a 12 to 15-foot unidentified object, seen "travelling with the wind". The object didn't "manoeuvre or change direction" and appeared to be similar to a "large, somewhat deformed balloon". The video of the object, which appeared to have a "darker, maroonish colour", was shot from a US military platform.