not to contradict your post that SWAT tactics aren't intimidating, just "individual tactics performed in a group," but...
people are often surprised at the result of group activity formed by the sum of individual activities. Examples are the gridlock in Los Angeles, giant ant hills in Africa, and "killer" bees. Each individual perform its task in each example only to result in a group behavior that was not forseeable based on analyzing the individual.
-just my geeky two cents.
Whats my point? That the individual tactics are not intimidating. But it's exactly the "performed in a group" that gives SWAT its power. This is also why individual suspects have such a hard time evading even just two officers in pursuit who are in constant communication.