Dear god what is next.. are we all going go up to the volcano to sacrifice a virgin? Try someone for witchcraft if they make devil fire come out of a little plastic stick?
And another thing; If I hear one more person say that such and such (usually evolution) is merely a theory I am going to scream. Or is that scram.
Oh well anyway as Hojon pointed out forces are well understood by physicists. Forces are transmitted by particles. The electromagnetic force is transmitted by the photon. Other nuclear forces are transmitted by other particles. These particles have been predicted to exist by quantum theory and they have been verified in experiments. The graviton has been predicted but has not been seen experimentally yet.
Regarding this conspiracy bullshit even if the US govt could keep things hush hush do you think the rest of the world is going to cooperate? I'm quite sure any number of scientists out of reach of the US govt would enjoy getting a Noble prize. Or do you think only the US has discovered these alleged secrets?