Here's what we know about the shooting near the White House: Two people were wounded, including a possible suspect, in a shooting outside the White House at 17th Street and Pennsylvania Avenue NW near the Eisenhower Executive Office Building, law enforcement sources told CBS News. Approximately 15 to 30 gunshots were fired, the sources said. Two other sources familiar with the matter told CBS News that a suspect opened fire on a security booth where U.S. Secret Service officers were stationed inside, and officers returned fire. The sources said the suspect and a bystander were wounded, but no agents were...