January 13, 2011
The bomber carried balloons. They were silver and purple, and when he stepped inside the parking garage, they flitted and danced around his head—obscuring his face, as well as his intentions. It was October 2008, just after 4:30 on a Wednesday afternoon, and the workers in the office tower above the garage in suburban St. Louis were still at their desks. Only surveillance cameras saw the man with the balloons as he hurriedly walked to the parking space marked “654,” knelt down, and placed a wicker basket next to the driver’s side door of a late model Acura TL.