[TigerClaws]

A hammer is visible in one of the photos.

Some in the conspiracy theory crowd have suggested a second shooter was on 4th floor.

[TXnMA]

I examined that video -- taken from inside a moving car. There IS a sequence of repetitive flashes --synched with gunshot sounds -- apparently at 4th floor level.

HOWEVER, that is a "curtain wall" building, and the perp had to break out windows with a hammer to be able to fire outside. AFAIK, no broken windows on the 4th floor have been reported.

Reflections in the car window? Fake? Something else?