Yes, he is. It is 100% political activist propaganda fodder he is throwing out for the Mockingbird Media to pick up on.
It is demonstrably false since the only thing between the shooter and Trump that was elevated enough to have created shrapnel, that could have then hit Trump, had it been hit, was the teleprompter on his right. It was fully intact as even Snopes has admitted and proven.
Wray is Deep State scum who belongs in Gitmo and his TDS is glaringly obvious here.
So Wray is just saying a bullet might have stricken ice chunks falling from the sky, it would be unprofessional to leave that possibility out. Or, that some other gunman, from another direction, might have broken something else. Yeah, that's the ticket. Two gunmen. Wait ... umm ...
/s
Besides all that, I have two friends in Arlington that would tell you shrapnel is deadly too.