Terry what is the seating capacity of the absolute biggest of all of the Ford SUV you mention?It depends on the Expedition. The Expedition EL, or as they are called now, the Expedition Max are almost as big as the Excursion. Wife and I have had an Excursion in the past and currently have an Expedition Max. It may be a bit smaller than the Excursion.
Don't answer, it isn't that important to the story. It doesn't matter if it seats 5 or 8. They apparently had 27 in the vehicle.
Thoughts and prayers for all involved including the First Responders.