(Tigard, OR) -- A woman has been charged with assaulting a federal officer. On Sunday, officers were arresting a person in Tigard. Summer Shepherd allegedly pushed an officer in the chest, causing him to stumble backwards. He got into his car. She hit the vehicle causing a dent. She yanked the door open and when the officer put his hand out to stop her from coming inside, she slammed the door on his arm. Shepherd was arrested. After making a court appearance, she was released until her next court date.