Hitler's Stealth Aircraft

This is an amazing video as it shows how far ahead of us German technology was in the 30s. They were also the early pioneers in atomic research and had a committee of aviation experts working on a flying saucer. Hitler didn't believe he would need these wonders to win the war and he was also constrained by his limited supply of natural resources. Is it possible we have benefited from German research since the war ended? I think it's probable and our stealth fighter is a result. I also believe those flying saucers are really products of our own military. What do you think?