He says neither side expects a major shift in relations, but the White House does have reason for concern.

VOA: standard.2009.11.12

But a shift in emphasis to security issues offers a new set of challenges for the president.

VOA: standard.2010.01.06

So for a company that is just launching, or launching a new product line, or is making a big company shift, the Super Bowl offers a unique platform."

VOA: standard.2010.01.27

"But I do think that in general we have seen a shift from, for lack of a better term, professionalized terrorist operations to those that are conducted by not exactly amateurs, but folks with less training and less capability generally, technical capability."

VOA: standard.2010.05.05