Leakers From Wrong Department

I have just been reading about how Bradley Manning now wants to be called Chelsea and treated as a woman. As he is embarking on a 35 year prison sentence, i think his 'think of me as woman' wish may well be repeatedly granted.
The other big news from the past few weeks was the admission by the Americans that Area 51 exists and it has been where the American Government have been performing aerial surveillance programs for decades which is why strange lights have been in that area of Nevada.
Obviously it is important that whisltleblowers like Bradley Manning and Edward Snowden continue to expose what dubious things our Governments are up to but with all these secrets being let out the bag, it is worrying that none of them are concerned with our Governments hushing up alien contact.
The Occam's Razor principle that the simplest explanation is usually the correct one means we should accept that the reason why amongst all the dirty washing being aired we are not hearing about contact from little green men is because the little green men haven't contacted us, but what sort of conspiracy theory is that?
The Snowden and Manning leaks seem to centre around foreign policy and what our military departments have been up to so maybe the reason why we are hearing nothing is because the leaker's have not been from the right area of Government.
The documents we need will have to come from the whatever Government department controls the information on these things which is the US Department of Defence so until a leaker turns up in Moscow airport from that department with a CD full of Alien footage, the wait continues and we will have to entertain ourselves with news of how the Government is reading everything you write and listen to everything you say to protect your freedoms to write and say what you want for now.