美国特勤局表示,在华盛顿避免了国家悲剧. Secret Service says national tragedy avoided in Washington, D.C.

美国特勤局表示,在华盛顿避免了国家悲剧. 但该机构尚未公布有关事件的细节. The Secret Service says a national tragedy was avoided in Washington, D.C., though the agency has not released details about the incident.