Her stone-cold and unbothered demeanor was accented by her shooting glasses, seemingly taken right out of a sci-fi movie. But the glasses aren't just for style points. Stream NBC 5 for free, 24/7 ...

Her stone-cold and unbothered demeanor was accented by her shooting glasses, seemingly taken right out of a sci-fi movie. But the glasses aren't just for style points. Stream Los Angeles News for ...

WATCH: Olympic shooting glasses, explained "Closing our one eye for a couple hours at a time becomes really painful and tedious," Lexi Lagan said.