Military Surge in Vancouver?

You heard that right. There's going to be a large military contingent for security during the Olympics. Having the Olympics in the post 9-11 world is a real pain. (read)

VANCOUVER — With frigates in the harbour and jets zooming overhead next month during the first active Olympic security exercise, residents here will not need a reminder that Canada's hard-pressed military will play a major role in one of the largest peacetime security operations in the country's history.

An estimated 4,000 members of the armed forces will be seconded to Olympic duties in 2010 – far more than the 2,500 to 2,800 military personnel currently deployed in Afghanistan.

(...)

Two frigates and three maritime coastal defence vessels, some aircraft and a light contingent of troops will participate from the military, sources indicated.

I'm not a defense expert by why do we need five ships, including two firepower heavy frigates? To counter German U-Boats?

Looks like a PR excercise. I hope to get some pictures of the frigates.