You need an special AMA waiver to operate the jets in the first place, and that is a good place to start with a lot of information already in place, such as a list of participants. The event has probably been scheduled for a considerable length of time, and considering the expense that all concerned had already put out, I would guess that the AMA could intercede with the FAA for the event organizers,(since it is the FAA that issues the NOTAM) and the FAA could then coordinate with the Secret Service to get the inspections and grant the waiver. I don't know how much advanced notice they had of the POTUS visit, but I can imagine it wasn't much, and if all that red tape was worked through, I'm impressed at the efforts of all involved. May be evidence of all the liaison work the AMA has done with the Government on the behalf of model aviation and the current "drone scare." It also might help with possible future waivers for events that are already scheduled and can deal with short or no notice visits of our friends from Washington D.C.
The big revelation will be how the Community Organizer in Chief will have the Government buy some rain for the farmers in California!
Type at you later,
Dan McEntee