Has it been reported yet exactly what brand, caliber, etc. the gun used by the shooter in the assassination attempt, other than "AR type rifle"? Seems like, as we all know, that any black gun is reported as an AR type gun. I don't think it is some super-secret information that only the Secret Service Dept. needs to hide from John Q. Public, is it? I thought I read that someone stated it didn't sound like some powerful hunting rifle like a .223 caliber. That confused me a little!