Nation Wood, a former White House staffer, has been charged with involuntary manslaughter after his girlfriend Samantha Emge was killed in San Francisco.
Wood reportedly told officials he had accidentally shot Emge through the wall while she was showering.
The judge set bail at $300,000 during his hearing.
Emge, a resident of San Francisco and graduate of San Francisco State University, was struck by a bullet and transported to a hospital where she was declared dead.
Wood's LinkedIn profile notes he was an 'independent pre-event site security adviser' and had experience with the Secret Service as part of the White House advance team.
Wood's family members, including his father, were present for the arraignment.
