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A little girl with a terminal illness got her wish to help her community for a day.

On April 17, Olivia Grant became chief of the Denver Police Department.

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“That’s a day she’ll never forget,” mom Kelly Grant told ABC News.

Olivia has a neurogastrointestinal disorder. The condition has shut down her organs.

Because of her disorder, Olivia has become very familiar with her first responders. As one of her bucket list items, she asked to help her officers catch the bad guys.

“It was little things to them that meant a lifetime to her. We don’t know how long we have with her. They have no idea the impact they’ve had on our family,” said Grant.