The day after was when the cover-up began. If you mean Col. Corso's book, it provides further
evidence that there was a cover up and there are aliens or at least alien technology exists among us.
Think of the jump in technology in only a relatively short period of time.
From wires to printed circuits. From tubes to transistors to integrated circuits with everything in a microchip.
Suddenly as if by magick, right after WWII technology grew in sophistication by leaps and bounds.
Coincidentally, that's when all the sightings, though there have surely been others throughout modern history,
as well as the conspiracy theories began.
What secret information do you hold? Tell us...We're watching you.
Regards,
Hazy
Edit: Some of my best friends are shadow people