Orlando Shooter Checked Facebook During Attack

While he held hostages for hours in a nightclub methodically killing patrons, the gunman in last week's deadly Orlando shooting searched [f500link]Facebook[/f500link] to see if news of the attack was going viral, according to a lawmaker. Wisconsin Republican Sen. Ron Johnson, chairman of the Senate Homeland Security Committee, disclosed gunman Omar Mateen's social media activity in a letter to Facebook CEO Mark Zuckerberg.