There have been rumours about the Canadians staging amphibious excercises outside of Victoria on Vancouver Island. The Olympic peninsula is wide open to attack.
There have also been reports of Canadian forces massing along the Montana border. (It has long been said that the Canadians want more prairie for "living space.") But probably the most disturbing is the presence of highly mobile forces just north of Duluth, Minnesota. These forces supposedly have Wisconsin targeted for domination so that they can control the Cheese production facilities. (This option is pushed heavily by the French speaking population of Quebec. You know how the French love their cheese!)
(please note...the above was meant to be HUMOROUS and in no way reflects ill on the Nation of Canada, it's people or it's military. Even though "mass forces" for them would be about 3 platoons of infantry.)