This document summarizes some key changes to airport security procedures after 9/11. It notes that security screening became more comprehensive, with additional restrictions placed on liquids, non-travelers accessing gates, and cockpit access. Liquids are now limited to 3 ounces or less in clear plastic bags. Only ticketed passengers can pass security. And the airplane cockpit remains locked for all flights.

1. Airport Changes

2. Addition of Security
VS
Before 9-11
After 9-11
Security became well enforced and
comprehensive All sweatshirts and
shoes must come off along with
computers and cell phones out of
carry-on luggage. More officers
guard each aspect of security as
well.

3. Liquid Policy
VS
Before 9-11
After 9-11
Before 9-11, there were no regulations on the amount of liquid a
person could bring on an airplane. Now there are restrictions:
bottles can only contain up to three ounces of liquid. The bottles
must be clear and in a plastic bag that goes through security.

4. Non-Travelers at the Gate
VS
Before 9:11
After 9-11
Before 9-11, anyone could
accompany a family member
or friend to their gate before
their plane.
After 9-11, a ticket was required to
go past security. This meant that
families and friends were separated
sooner than before.

5. Cockpit Closed
VS
Before 9-11 After 9-11
Before 9-11 the cockpit was open for all flyers to
see into; however, after the planes were taken over
by terrorists, the cockpit now remains locked off to
all travelers.