Flyjack, what bank employee are you quoting that says he rubber banded the money?
I've not seen any interview posted, or memo that says that.
It comes from several agents statements and logic..
The money was assembled and random sized. Ckret and Baker
The Ingrams found rubber band frags.
TBAR "packets" were in 100's = not random sized..
The Bank employee must have random sized the "bundles" (groups of packets) with rubber bands.
It all fits.. Ckret was wrong, he assumed the "packets" were random sized, they weren't.