I apologize for posting this here, but i think that here it will have more chances to be seen by people that have an actual knowledge on the subject
matter.
At first I thought the two black objects looked like flat wings, but when I zoom in, it looks like they are cylindrical. This is just a suggestion,
but could they perhaps be parts of some kind of advertising inflatables? Like these "Air dancers":
well its really bad resolution at 72 dpi and even though it is large in the picture you can't see much detail. To me it looks inflated with some sort
of lighter then air gas and it looks like a material bag has been inflated due to the look of the bends and kinks in the 2 "balloons". I'll see
what I can dig up.