I don't think I could have done much more than lift the heavy metal helmet off my head.

Firemen in large metal helmets with numbers on them.

He wore a metal helmet on his head as did all the others.

He donned a new costume after that, complete with a metal helmet.

He looked like a Caucasian male with long, blond hair flowing from under a metal helmet.

In battle, he would stand on the front gun tower of the boat, and the crew made him a special metal helmet.

A man in a lab coat put a metal helmet on his head.

"They must wear metal helmets with a screen of magnetic force."

A metal helmet and breastplate shone with the color of gold.

These were large metal helmets which fit onto dinosaur's heads and control their brains.