unknown mystery girl, early aviation....

When my Grandpa on my mom's side died, I was going through his things. He was always into aviation, and was a bit too old for WWII, had bad vision and flat feet, so he was rejected from the draft any way. He also worked building air planes durring WWII. I found this negative with a bunch of his old papers and stuff. And this is what came up when I had it developed. Its a shame its not a clear photo, as she is quite attractive, and the air planes in the back ground are cool too!! No one has any idea who she was, or where it was taken.