Well here’s a story written in 2003 about exactly that, that I find myself thinking about more and more often

https://marshallbrain.com/manna1

Did the secret service allow this? In the TMZ video of the return fire, it looks like the sniper on the roof was already aiming at the shooter well before he shot. And only after he shot did the sniper take him out.

Maybe coincidence…but seeing this level of incompetence from the secret service makes this whole thing seem very very fishy.