We know the shooter was found dead on a rooftop. The implication is obvious: Failure to secure all nearby rooftops.
Respectfully, why are you so dedicated to defending the SS when it is quite obvious they failed?
Respectfully, because we do not know the details. Assumptions made. The guy on the roof is dead— by whom? Trump’s detail is handpicked, not the C or D team. Beyond that won’t say more, any more than would speak to the large private security.