Details emerge of alleged shooter at White House correspondents' dinner

Agents stand guard after the shooting at the annual White House Correspondents Association Dinner on Saturday. Andrew Harnik/Getty Images hide caption toggle caption Andrew Harnik/Getty Images Hours after a gunman attempted to breach the White House Correspondents' Dinner, details are slowly emerging about who he is. The alleged gunman has been identified as Cole Allen, according to two sources familiar with the matter. …