Not to say this is real, but people really don't think actual confidential documents have "Confidential" on them? Wow.
All joking aside, I work at an Army Depot and there have been tons of times that I've handled confidential documents have been labeled confidential (the type of documents you can't leave around and must send to the shredder boxes when finished). Sometimes even stamped confidential, like out of some cheesy TV detective show.
It's pretty funny actually.
But yes this is fake.