NYT Umbrella Man Exposed

[Greg Burnham]

That would be something if Umbrella Man's umbrella was a hypno-trigger for Greer to put on the brakes.

I would think the actions of TUM, as I understand them, along with the DCM fist waving in the street would be enough to cause a reaction by the Limo driver to slow down/brake momentarily to assist the shooter(s) in hitting his/their mark. To me, those actions by TUM and DCM were very important for the assassination to be completed, whether or not those actions were for that reason or coincidence.
:attention:

It should also be noted that the DPD motor escort was EXTREMELY negligent in its duties that day. Whether due to incompetence, following orders, or lack of experience, the result was the same: Gross breach in protocol. As soon as a man (DCM) was seen standing in the street ahead of the client's vehicle, a motor escort should have peeled off from the Queen Mary and driven directly AT the Dark Complected Man "tapping" his air horn and/or "chirping" his siren, forcing DCM to retreat to the sidewalk. Then the officer should have issued a stern command to TUM to lose the umbrella NOW! Greer should never have been placed in the position of needing to react to DCM because, had the DPD motor escorts done their job, Greer's "slow reaction time" and/or poor judgment would not have been effected by DCM or TUM.