Step 1: Hold $20 with back facing you.
Step 2: Fold top half away from you.
Step 3: Fold left side of Bill towards you and down until it covers half of the White House.
Step 4: Fold right side of Bill towards you and down until you have a point at the top.
Now if you rotate the bill 180 degrees you can clearly see the World Trade Center after it was struck.
If you turn over the folded $20.00 bill you now will see smoke coming from the Pentagon.