From Jan. 2020:
Security Changes in Effect at Walter Reed Medical Center
Rising tensions in the Middle East have led to increased security at Walter Reed Medical Center in Bethesda, Maryland.
Gate 2 (South Gate, across from Metro) is open to inbound traffic only from 5 to 9 a.m. Monday through Friday and open to all traffic from 9 a.m. to 6 p.m. on weekdays. Automated pedestrian turnstiles will remain open 24/7, and ADA swing gates will remain open from 5 a.m. to 6 p.m. on weekdays. The gate will be closed on weekends.
Gate 3 (NEX Gate) is open to inbound vehicle traffic only from 5 to 8:30 a.m. on weekdays and switches to outbound only traffic from 3 to 6 p.m. on weekdays. The gate is closed to all pedestrian traffic.
Gate 4 (Navy Lodge) remains closed to both vehicles and pedestrians until further notice.
Gate 5 (USU Gate) is open 5 a.m. to 6 p.m. on weekdays for taxis, delivery vehicles and non-DOD traffic.
Employees, patients and visitors should expect delays as security must check the IDs of drivers and everyone inside each vehicle that comes through.
All non-Department of Defense personnel without official ID traveling by personal vehicle should proceed to Pass and I.D. at Gate 1 for vetting. After vetting, they will be redirected to Gate 5 for vehicle inspection.
Shuttles will still operate but may alternate their routes due to the changes in gate operations.
https://www.nbcwashington.com/news/local/security-changes-in-effect-at-walter-reed-medical-center/2196582/