BREAKING: White House Goes On Lock Down Right After Obama Does THIS According to reports released on Monday, the White House was placed on lock down shortly after President Obama returned the executive mansion from his Memorial Day visit to the Arlington National Cemetery. AP Politics broke the news on Twitter, tweeting, Shortly after Obama returns from Arlington, woman throws something over White House fence, sparking a lockdown. Local news reports included sightings of emergency personnelincluding hazard materials teamsresponding to the emergency call from the White House. It is believed that at least one individual tossed a suspicious package over the propertys perimeter wall, but very few additional details have been released. Reporters on the scene indicated that they were temporary blocked from leaving the White house grounds, but were later ushered out through a separate exit. What do you think of these reports? Could something serious be going on? 