I think there is a LOT of things our government isn't telling us.
I truly believe there are aliens and they know about them. Sorry, but too much damn proof. Too many sightings. Too many people talking about it. Bob Lazar has been talking about it since the 80s, and the stuff coming to light with the Grusch hearings is only making Lazar look more and more credible.
I believe bigfoot is real, and the logging industry prevents it from being studied in any sort of seriousness. Plus, how would people react if they found out that there was an intelligent ape species practically in their backyards. There have been too many sightings of people describing the exact same thing.
But Russia would have been able to destroy the US's credibility if they could have proven we lied about the moon landing. They STILL would. If Putin had credible evidence we faked it and released it today, think of the insanity it would cause.
No, sorry, we landed on the moon.
Not only that, but there were too many people involved. Too many people would have had to know for it to be covered up.