U.S. Gen. David Petraeus, center, Commander of US CENTCOM, center, shakes hands with sailors from HMCS Calgary as he tours a Canadian military display at the Calgary Stampede, in Calgary, Canada on Friday, July 3, 2009. Petraeus is in Calgary to attend meetings with his counterparts in the Canadian military. AP Photo logo AP Photo 5 months ago

U.S. Gen. David Petraeus, center, Commander of US CENTCOM, center, shakes hands with sailors from HMCS Calgary as he tours a Canadian military display at the Calgary Stampede, in Calgary, Canada on Friday, July 3, 2009. Petraeus is in Calgary to attend meetings with his counterparts in the Canadian military.