This photo provided by Courtney Grimm shows the shattered glass outside of President Barack Obama's Denver campaign office on Friday, Oct. 12, 2012. Denver police say someone has fired

 

              This photo provided by Courtney Grimm shows the shattered glass outside of President Barack Obama
This photo provided by Courtney Grimm shows the shattered glass outside of President Barack Obama's Denver campaign office on Friday, Oct. 12, 2012. Denver police say someone has fired a shot through the window of the campaign office. Police spokeswoman Raquel Lopez says people were inside the office when the shooting happened Friday afternoon, but no one was injured. A large panel of glass was left shattered at the office on West Ninth Avenue near Acoma Street. Lopez says investigators are looking at surveillance video but have not yet confirmed a description of a vehicle that might be linked to the shooting. Police didn't immediately release other details while detectives pursue leads. (AP Photo/Courtney Grimm)