Q. Do travelers have to do anything differently for security checkpoint procedures?
Air Travel: Within U.S. According to the TSA, security checkpoint requirements for passengers departing U.S. airports remain the same. This agency does add that passengers wearing loose fitting or bulky clothing - including headwear - may be subject to additional screening. Read more.

Air Travel: Canada to U.S.
If you're flying from Canada to the U.S., no carry-on baggage is allowed in the cabin. Certain items such as laptops and purses are exceptions to the rule. Read more.

Air Travel: International to U.S.
President Obama announced that more air marshals are being added to flights and that the TSA has toughened some international screening requirements. Passengers inbound to the U.S. traveling from or through nations that are designated by the United States as state sponsors of terrorism or other countries of interest will be required to go through enhanced screening.

For now, the requirement applies to four countries designated as state sponsors of terrorism: Cuba, Iran, Sudan and Syria; and ten other countries of interest: Afghanistan, Algeria, Iraq, Lebanon, Libya, Nigeria, Pakistan, Saudi Arabia, Somalia and Yemen.

Q. Should passengers plan to arrive at airports earlier than normal?
Passengers may want to allow additional time to get through security on international flights bound to U.S. These times may vary by airport, and travelers may wish to check with the airport or carrier.

Q. How long will these measures remain in place?
The TSA says it will continuously review these measures to ensure the highest levels of security.

Q. What are whole-body image scanners?
Designed to expose concealed weapons and explosives, the body scan produces an image that is anatomically explicit. Travelers who object to its use, will have the option of a pat down. The TSA is quick to point out that to ensure privacy, the passenger imaging technology has zero storage capability and images will not be printed, stored or transmitted. The TSA is planning to replace existing walk-through metal detectors at U.S. airports with whole-body imaging scanners. Learn more.

Resources:
U.S. Department of State: Safety and Security Conditions by Country
TSA: General Information for Travelers
U.S. Department of State: Travel Page
Traveler Tips - How to Get Through the Line Faster

Best Regards,
Your Travel Manager