honest question from an inquiring mind, how do we know with absolute certainty that none of the money was ever spent?
That ol’ serial number thingy. From what I understand (vie History Channel) the Federal Government has been monitoring for matching serial numbers for all this time, mostly in old bills as they are destroyed. ;-)
Because the FBI told us so! Hey, wait a minute. Didn't the FBI just tell us it wasn't old DB's parachute? Maybe he spent some if the money on another parachute.