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Guindon had a long history with the Prince William County force, having interned in the forensics unit in 2011 before attending training in January 2015, Hudson said. She graduated from the police academy in June, but resigned soon after for personal reasons, he said.

She came back to the force a few months later and was sworn in Friday, Hudson said.

Hudson said Guindon had a \"passion to do this job,\" and a \"passion to serve others that went beyond herself.\"

\"We ask for everyone’s thoughts and prayers as our department deals with this tragic loss,\" said the Prince William County Police in a statement posted on Facebook.

McKeown and Hempen are believed to make a full recovery but it is a \"long road,\" according to Hudson.

Hamilton, is an active duty staff sergeant assigned to the Joint Staff Support Center at the Pentagon, an Army spokesman said. He faces several charges, including first-degree murder and murder of a law enforcement officer.

Hamilton was scheduled to be arraigned Monday morning.

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