Pentagon locked down after shooting at subway station By AFP - Aug 04,2021 - Last updated at Aug 04,2021 Virginia Sate Troopers patrol near the Pentagon after report of an active shooter and lockdown in Washington, DC, on Tuesday (AFP photo) WASHINGTON — The Pentagon went on lockdown on Tuesday after a shooting at a bus and subway station just outside the highly secure US military headquarters. Employees in the US Defence Department office complex in the Arlington suburb of Washington were ordered to shelter in place for more than an hour after gunfire erupted in the station, the entrance of which is just a few metres from the building’s main doors.