here are some things to consider:
1947 - just after WWII, the united states was probably feeling pretty confident about their status as the world power.
imagine what it felt to be informed that a race of small alien beings, thousands of years advanced than us, had 'crash' landed on american soil ?
they felt threatened, and did not want anyone to know that there could possibly be 'someone' more advanced, or 'higher' than us on earth.
thus was born the secrecy...
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but! consider this:
numerous ships 'crashed' around the globe, making it appearant (at least to me) that is was a staged plan to bring forth their (alien) presence in a threat-less manner. (pretending the ships crashed, all bodies dead (except a few of course, who would be the centerpoint of investigation and a whole lot of other fun stuff)
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now, knowing that an advanced race of life forms have touched down on earth, these countries became FILLED with IDEAS, GREED, and SELFISHNESS. I would like to point out here that the entire thing was going EXACTLY AS PLANNED, according to the Aliens who planned the entire 'crash landings' etc. These aliens were of the infamous 'service-to-self' orientation as some call it, I just label them Negatives.
See, they wanted to dig their way into the government agencies in order to begin their mass abduction plan. they could not do this, like i have stated, without PERMISSION. well, what do ya know, they offered us TECHNOLOGY in exchange for abduction rights..... and of course the governments WOULD LIKE TO HAVE SOME NEW TECHNOLOGY, like stryder is sort-of touching, ESPIONAGE !
so, they thought they could get ahead of the rest of Humans by SECRETELY dealing with these Aliens behind closed doors. What they didnt know was that these Aliens were decieving them, and actually cutting deals with OTHER COUNTRIES AS WELL.
hah, you know, you gotta give them credit for fooling the most powerful nations of the so called earth...
it just goes to show you how premature (or immature, you pick) WE ARE, and how Advanced they really are....
more on this later