http://www.usatoday.com/travel/flights/2010-12-24-airport-alert-beverage-containers_N.htm

The Dept. of Homeland Security has issued an alert at airports for insulated beverage containers like thermoses, which they believe could be used to hide explosives. If a thermos is filled with coffee from Starbucks, they’re right; it could lead to something explosive.

Passengers carrying thermoses in their luggage really could wind up in hot water.

The ACLU has already warned the TSA that there had better not be any profiling of anyone carrying a bullet-shaped thermos.