Texas law enforcement got some help keeping the roads safe yesterday.

Yesterday, 6-year-old Kyssi Andrews' dream of becoming a Texas state trooper came true.

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Andrews was first diagnosed with a rare kidney cancer when she was 3. Now, the 6-year-old is battling lung cancer in both lungs and has a 20 percent chance of survival.

The little girl was sworn in as an honorary state trooper and spent the day with authorities.

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Watch the video above, and check out photos of her big day below.