Because,a lot of folks think it has NO gold...Watching a show called DECODED with brad meltzer (or something like that)..the entire show was about the rumour that there was no gold there(most thought it had been sold by govt)..amazing facts,no civilians in there in FORTY years,and no audit done for a long time.People who worked there claimed vaults were empty,or that they contained weapons,drugs...everything but gold.Now i know its just tv,but if you re ever bored,find this episode (they also did an interesting d.b cooper episode)