Trumpled (Alternative Leading)

[Lods]

No there wasn't, but when I posted that video I made the comment about screams coming after the fact which gave the appearance of collateral damage.
So I thought it was a very high probability despite no media suggesting as much.

I was watching it live (sad admission)  
My initial thoughts were, with that many shots there would have to have been some injuries to spectators.
I even stated as much in the OP regarding the incident and described it as 'bizarre' that there didn't seem to be others hurt.
We learn't after the fact that there were, but it took probably half an hour (maybe more) from the shooting before that news came through that there were injuries and that the shooter and one other was dead.

I think the initial reaction of those close by was disbelief...it took some a while to react
It may have been that that delayed response that meant screams weren't forthcoming straight away, or you may be right and the screams came from someone close to the victims.