The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
U.S. Marshals Service
Once a witness is advised that his or her attendance is no longer required, a Fact Witness Voucher (DOJ-3) is obtained from the U.S Marshals Service for each witness subpoenaed.