Normal practice is as follows for dignitaries let alone former presidents.

Secret Service man’s the venue itself. Local police man’s the perimeter. Every roof is not only secured but actually occupied. There’s an officer on every roof that is a concern.

Again, every roof physically has an officer on it. That’s how it’s handled for ambassadors, senators, and obviously leaders of a country.

As long as you didn’t drench that in ranch it’d probably still be fairly healthy.