article_snippet.sent: Authorities locked down the Suitland, Maryland campus just before 8pm Thursday amid reports that the shooter had barricaded the shooter somewhere inside after ramming the front gates.
article_snippet.sent: Heavily armed tactical teams swarmed to the campus amid reports the shooter had barricaded the shooter inside . '
article_snippet.sent: The campus, built in 2006 and employing thousands, was locked down until about 9pm as authorities unsure where the shooter had gone quickly swarmed.
article_snippet.sent: Sharp shooters positioned Sharp shooters outside the campus as authorities sought to determine where the shooter had fled .
article_snippet.sent: Reports from the scene indicated that loud bangs rang out inside the campus around 8pm, but it wasn't immediately clear if they came from guns or, perhaps, from police 'flash-bang' grenades used to disorient suspects .
highlights_snippet.sent: the U.S. Census Bureau campus was briefly locked down as authorities assessed the situation .
  