I dunno how it is in the US, but here in Brazil, firemen also use gold-plated helmets. I once in a first aid training asked one fireman that was present to bor

I dunno how it is in the US, but here in Brazil, firemen also use gold-plated helmets. I once in a first aid training asked one fireman that was present to borrow me his helmet, because I was doubting you could see through it (I was 12). The nice man put the helmet correctly on my head, and to my surprise, I really could see! Everything was blue, but I could see everything, it was really cool. This article explained to me WHY I could see... I was still puzzled (I thought gold reflected 100% of visible light)