Easy, wow where are all the headlines pronouncing FDR knew Japan was going to attack Pearl Harbor on December, are you kidding me, yes the Commander of the Pacific Fleet had a rumor, I'm sure they had rumors of several possible locations of an attack, does that mean that they knew Japan was going to attack Pearl Harbor,no, I laugh, that is not proof of anything, especially since the rumor happened on Feb 7, so for all we know maybe they shuffled a lot of the personnel out after that rumor and since it did not happen until December, possible they brought back in their fleets, that really means nothing
and how do you know who the commander of the pacific fleet passed it on to