In today's House Committee on Homeland Security, the government says they have recovered SEVEN brass casings from the shooting. This is fascinating, since 10 total shots are clearly indicated in the multiple audio files, with #10 being Secret Service, and #9 likely to be PA law enforcement. So that means EIGHT additional rounds were fired. But only 7 brass casings recovered near Crooks. This means there's one shot that came from somewhere else. Hence the "second shooter" theory gains even more traction. Have they checked the 2nd story office with the open window yet? Something doesn't add up...