Words similar to helmet

Example sentences for: helmet

How can you use “helmet” in a sentence? Here are some example sentences to help you improve your vocabulary:

Walk on the sandy sea bottom only 21⁄2 m (8 ft) under the surface wearing a helmet that supplies a constant supply of oxygen.
Also shown are a lot of stars--24 or 25, one of them could be a dust speck--symbolizing something to do with the sky or night time or celebrities or spaceships or celebrities in spaceships like in Star Wars . There are a helmet and some ferns or laurel, some kind of leaves, and a Latin motto, "Salus Populi Suprema Lex Esto," which, if I remember my Latin, means "The Best People in This State Don't Have To Obey the Traffic Laws."
There is also a good restaurant on site, the Brass Helmet.
(Without a helmet?)
The second was that we may have difficulty selling alcohol interventions because they are in competition with other types of interventions such as helmet use, seat belt use, or smoking prevention.