I can't get to see this, my company's "Websense" program won't let me.
But, I grew up near Glenn L. Martin aircraft company, and I remember in
1944 they were testing three German aircraft against US aircraft. I saw
a bf109 and a fw190. I never did find out what the other plane was.
These three aircraft were traveling around the US (with escorts) for
different manufacturers to "play with". Wish I'd had a camera....
Charles