Buy a ticket to Neuschwabenland and show an NSDAP party membership card at the secret entrance.
I'm sure, every inhabitant there can answer questions about German flying saucers !
Until then, I remind to the very first point of our forum rules "... Posts on UFOs, Nazi wunderwaffen/flying
saucers, conspiracy theories, alien crashes, moon landing denials and the like are specifically discouraged
and repeat offenders will be banned."