Would also explain y their was so many post war UFO sightings during & after the war especially after since both the USA & USSR copied many German weapons & also experimented with other weird weapons the Germans were making.
The only problem with this theory is that in 1943 Los Angele's was the sight of more or less the USA's 1st encounter with UFOs
At around midnight US air defense radar picked up UFOs moving above Los Angele's & in response solders manning 5 inch anti aircraft artillery & search lights spotted targeted & opened fire on 3 cigar shaped objects. they had like 5 search lights fixed on one of the craft for an hour while AA fired almost everything they had on it with no effect. Heres a pic a newspaper guy caught during the event. After about an hour the dam thing just flew away with 3 other craft like it heading West towards the Pacific.
http://www.nicap.org/images/battle_LA.jpg
http://www.nicap.org/waves/1939-1946.htm
This would also explain y the government reacted so quickly after the Roswell incident
All tho were the Germans got the idea is beyond me @_@ seriously they advanced in terms of technology about 30-40 years ahead of the rest of the world coming right out of the depression 0.0 No other nation in modern history has made such a leap in tech EVER to this day even
But hey who knows this is just my own educated guess & speculation.