Never anything airborne, but many years ago when getting onto 101 on a pitch black night, near San Jose, Ca I was coming up on a large truck with lots of 6-8" steel pipe on it. It was like slow motion, I watched one of the pipes roll off of the bed of the truck and then it disappeared. All I could do was hear it sliding down the road, so I gassed the Norton, hugged the far left shoulder and went zipping by. I had no idea where it was, it didn't hit me so all was good. It sure scared the crap out of me though.
bob