On the one year anniversary of the attempted airline bombing over Detroit, a top military official says new warnings about insulated beverage containers are an example of federal officials trying to anticipate terror tactics.

 Adm. James Winnefeld told The Associated Press Friday that the Transportation Security Administration is “always trying to think ahead.” Winnefeld is the head of the U.S. Northern Command, which is charged with protecting the homeland.

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  TSA officials had said Thursday that in coming days, passengers flying within and to the U.S. may notice additional security measures related to insulated beverage containers such as thermoses.
 Winnefeld says officials responsible for homeland security are always a bit more alert over the holiday season. He says there has been a lot of chatter online about potential terror activity, but nothing specific.

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Umar Farouk Abdulmutallab was aboard a Northwest Airlines flight from Amsterdam to Detroit Metro Airport last Christmas Day.  He was carrying a bomb concealed in his underwear and attempted to detonate it aboard the flight shortly before it reached Metro Airport.  He was subdued by passengers on the plane.

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The Associated Press contributed to this report