The last type is the European-style helmet, which looks like a cross between a motorcycle helmet and something from Star Wars. The design is purportedly much more comfortable and practical. But, as one firefighter put it, "I've been involved with fire departments in four states...and in seven years have seen a grand total of two [European-style] helmets... these guys were... universally afraid of being mocked for wearing something new, different or 'unfashionable.'"
Shown is a helmet from the 18th century. Link -via Boing Boing