There are many things we are supposed to forget about that day.
"we can't find 2.3 trillion dollars worth of Pentagon transactions" - Donald Rumsfeld on 9/10/01
Look at the oversight records erased in this building:
"At the time of the September 11, 2001, attacks, Salomon Smith Barney was by far the largest tenant in 7 World Trade Center, occupying 1,202,900 sq ft (111,750 m2) (64 percent of the building) which included floors 28–45.[5]:2[28] Other major tenants included ITT Hartford Insurance Group (122,590 sq ft/11,400 m2), American Express Bank International (106,117 sq ft/9,900 m2), Standard Chartered Bank (111,398 sq ft/10,350 m2), and the Securities and Exchange Commission (106,117 sq ft/9,850 m2).[28] Smaller tenants included the Internal Revenue Service Regional Council (90,430 sq ft/8,400 m2) and the United States Secret Service (85,343 sq ft/7,900 m2).[28] The smallest tenants included the New York City Office of Emergency Management,[29] National Association of Insurance Commissioners, Federal Home Loan Bank of New York, First State Management Group Inc., Provident Financial Management, and the Immigration and Naturalization Service.[28] The Department of Defense (DOD) and Central Intelligence Agency (CIA) shared the 25th floor with the IRS.[5]:2 (The clandestine CIA office was revealed only after the 9/11 attacks.)[30] Floors 46–47 were mechanical floors, as were the bottom six floors and part of the seventh floor."