Pentagon papers 2.0; It's obvious to all but the most stupid that they couldn't have been ignorant of the uselessness of the purported mission, and instead pursued the real mission (daring raid on US treasury).

BONUS: The WaPo FOIA Saga prying this from .gov. Guarantee you this isn't even the worst of it. The stuff that will come out later is that they were sadistic and maliciously enjoying it all the way to the bank, not just liars.