

Oh, it was all computer data. Originals, copies, it all has the same information in it. Chain of custody would matter in a trial, but not to the general public. And you think nobody kept copies as CYA material? Nobody? Fat chance. We know the TLAs are full of power hungry career creeps. They know how to keep data safe for future use.
That all depends on the people. Many numbers in many places are far better than they were three decades ago. I could make a list, but so can you, so why bother.