Prince William County police officer Ashley Guindon, 28, clocked in to work her first shift on Saturday night.
She was killed hours later by Pentagon Army staff sergeant Ronald Hamilton when she responded to a 911 domestic violence call at his home in Lake Ridge, VA.
The 911 caller, Crystal Hamilton, 29, was shot and killed by her husband, Ronald Hamilton, 32, after she called 911 during a domestic dispute.
When Officer Guindon arrived at the upscale home on Lashmere Court, Ronald Hamilton opened the door and shot her point blank.
He also shot officers David McKeown, 33, and Jesse Hempen, 31, multiple times.
All 3 officers were airlifted to Inova Fairfax Hospital, where Guindon was pronounced dead. Officers McKeown and Hempen are listed in stable condition.
After a brief standoff with police, Hamilton emerged from the house and surrendered.
A neighbor saw the couple's terrified 11-year-old son running from the house at the time of the shootings.
“He ran so fast I can’t even imagine how scared he must have been,” neighbor Zacarius Harris told The Washington Post. “It broke my heart,” he said.
The boy is being cared for by relatives.
Hamilton is charged with capital murder, first degree murder, malicious wounding, and felony weapons charges. He is being held without bond.
Crystal Hamilton served in the Marine Corps and she was a member of the Wounded Warrior Regiment that takes care of wounded veterans.
Officer Guindon also served in the Marine Corps. She held a Masters degree in Forensic science from George Washington University.
"We were struck by her passion to do this job," Prince William County police chief Stephan M. Hudson said on Sunday. "She clearly had a passion to serve others in a way that went beyond herself."
Officer Guindon and another rookie had just been sworn in on Friday. Chief Hudson tweeted a photo of them along with the words: "Be safe!"
Welcome Officers Steven Kendall & Ashley Guindon who were sworn in today & begin their shifts this weekend.Be safe! pic.twitter.com/92c2YLjcQx
— Prince William Co PD (@PWCPoliceDept) February 26, 2016