 A trace is being done on the assault rifle to determine when it was purchased and who bought it. And as far as the Secret Service, they will be doing a postmortem on exactly what went wrong here. I'm told they will be looking into whether or not there's a need to push out further the security parameters for events like this. And, George, we should point out that the state police in Pennsylvania will take the lead on investigating the murder of the spectator and the two other men who were wounded in the crowd.