Fort McNair military installation access controls

Fort McNair at 355 M Street SW is an active United States Army post and hosts components of the National Defense University; it operates as a restricted military installation with entry limited to authorized personnel and vetted visitors. Access to the post is controlled by security checkpoints and visitors generally must obtain prior authorization or be escorted. The installation also contains historic sites, including the location associated with the 1865 military trial of conspirators in President Lincoln's assassination.