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Photo taken on Aug. 3, 2021 shows the Pentagon in Arlington, Virginia, the United States. The Pentagon lifted the lockdown roughly an hour and a half after multiple gunshots were fired near the Metro bus platform outside the building on Tuesday morning. The Pentagon Force Protection Agency, which sent out a lockdown alert following the "shooting event," said at the noon time that the facility reopened and the "scene of the incident is secure" though remains an active crime scene. (Xinhua/Liu Jie)