Police audio likely describes third Sandy Hook shooter: "Black shirt and an AR-15."

Never knew what to make of this, but occurred to me today that it's likely the description of a third shooter:

10:11:35 AM Male: "[Bla]ck shirt and an AR-15."

The reason I now feel that's a description of a third shooter, is that according to police audio, it is likely two shooters are already down; yet police are actively and breathlessly racing through the building--very possibly after someone else. Also, after the first two suspects are reported down, an officer transmits, "Coming the left side!"

It's still a high-paced race to clear the building - this means that the statement "Black shirt and an AR-15" does not likely describe a dead shooter; police don't need to know this information. It would be a waste of valuable time and airspace to describe the already-dead shooters.

It also is not likely to be the contents of the trunk of the car--again, an attempt to clear the building is underway, with victims bleeding, and there's no justification for describing a list of evidence found in a car.

However, "Black shirt and an AR-15" DOES jive with a short, necessary description, for incoming officers, of the shooter still being chased.