Visit Washington, D.C.: The National Plaza is closed when the alert is further strengthened.

As the presidential inauguration on the 20th approaches, the vigilance of Washington, D.C., is increasing.

On the 15th local time, the reporter visited the central area of Washington, D.C. again and found that 13 subway stations in the central area had been closed, more blocks were blocked, and the National Square was closed.

The guard area near Capitol Hill has been further expanded, and high fences are being installed around it.