Fire Helmet

Characteristics
It's a black fire helmet with the words "Fire rescue searchlight" written on the front along with a big 1.

Locations
The fire helmet is located at the Camp Searchlight fire station, the key for which is obtained via (fill in).

(NOT SURE IF IT'S UNIQUE CONFIRM) One can be found in an irradiated train tunnel east of Raul's shack and west of the brotherhood safehouse (Both sides have very hard locks, it goes through the cliff to Nellis Air Force Base).