Peter Doocy's wife, Hillary Vaughn, is also a journalist. Currently, Vaughn serves as a correspondent for Fox News and the Fox Business Network based in Washington, D.C. As listed in her Fox profile, Vaughn joined the network as a member of the second class of Fox News' Junior Reporter Program, which aims to help young, aspiring broadcasters looking to break into the field. During this period, she was stationed at Manchester, New Hampshire, where Vaughn experienced on-the-ground training reporting and working with the Fox News team. She later graduated as part of the Bravo class, alongside Fox national correspondents Matt Finn and Lauren Blanchard, and was officially named a Fox News correspondent herself in 2016.

As a Fox News reporter, Vaughn has traveled across the country to cover major national events, such as the 2020 presidential election cycle and the state funeral of former U.S. President George H.W. Bush. For her live coverage of the 2020 Iowa presidential caucuses, Vaughn has been featured on Fox News Rundown's "American Dream Series" on Fox News Audio. Additionally, she has appeared on several shows on the Fox News Channel, including "The Evening Edit," "The Faulkner Focus," "Tucker Carlson Tonight," and "After The Bell." Last year, she and Doocy shared an exciting announcement regarding their family. 

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