S officials said they expect the number of National Guard troops to rise to 25,000 in the capital a number that could increase even further, and the city set up vehicle checkpoints at a security perimeter surrounding central Washington.
S官員說,他們預計國民警衛隊在首都的人數將增加到25,000人,這個數字可能會進一步增加,該市在華盛頓市中心周圍的安全周邊設立了車輛檢查站。