Police say Jessica Wills and Jacqueline Benavides both stabbed 31-year-old Brian Santos after a fight.
Detectives say the Anaheim man was in Fresno visiting the couple and celebrating the New Year with his girlfriend.
Police say hours into 2014, an argument broke out, which led wills and Benavides to grab a knife.
The California Army National Guard confirms that Jessica Wills is a specialist, and police say all four people did a tour in Afghanistan together.
