Until the dude making all of these claims presents actual proof I don't believe a word of it. So far all he has is hearsay, he can't identify the people who told him things, the few people who he did identify haven't come forward to my knowledge, and all of the documents he claims to have are top secret and not releasable to the public.

When you're making a claim as big as "aliens are here and the government has their ships and some bodies from them and is also covering it up," you need to provide more evidence than "I know because multiple people have told me but I'm not allowed to say who, also ive never seen them, and I have documents to prove it but you can't see them because the government says so."