The Transportation Security Administration (TSA) (Washington) has imposed even tighter security regulations, especially for international arriving flights as it attempts to learn how a 23-year old Nigerian man was permitted to enter the country while trying to blow up the Northwest Airlines (now in Delta colors) Airbus A330-323X N820NW (msn 859) while on approach at Detroit. Carry-on luggage is being limited to one item and lines at security checkpoints are expected to be long at most U.S. airports.
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