I was looking at the new Popular Science or Mechanics and its cover article is about the dronig of America and it struck me that a GoPro equipped drone could do wonders about getting past the cclone fenced berms that surround the Bowling Green Assembly plant, so I went on Amazon and found this link:
http://www.amazon.com/s/ref=nb_sb_ss...es%2Caps%2C902
and that looks like an ideal solution to me. I know from past experience from a few hundred to up to several hundred assembled units can be parked in such a way as to make it difficult to observe/count.
Just an idea.
Laborsmith