I was nearly killed at an SCCA ProSolo event in Peru Indiana about 4 years ago. The course was shaped like in irregular bow, similar to the breast cancer pink bows that symbolize breast cancer awareness. Very similar to this:
I was working in the center of the circle of the bow. Cars launched about every 25 seconds. I remember a worker station not really paying attention, and when a cone went down, after screaming 'cone' multiple times to them, I ran out (a long ways mind you) to fix the down cone. I was in between the 'bottom' of the bow and one side of the course was live for the start and one side was live for the finish. I setup the cone and didn't know which way to run.
Unfortunately, I ran towards the live section that Marcus Meredith in his ESP prepped Mustang was at the top of 2nd gear in (around 65 mph). I stopped about 2 ft from the inside of a live gate, and Marcus went zooming by. I nearly peed myself... I'm know others watching got really scared too.
I apologized to Marcus afterwards, but he had no recollection of it... fortunately, I guess

In hindsight, I should have just left the cone for the correct station, because I obviously didn't know what was the best escape route.
I think that Greenville poses a similar threat, but it can be managed a lot by launch interval. The longer the interval, the less likely there will be people not paying attention. I would think we need to try to fill those spots with workers with a good amount of experience to ensure that a rookie isn't caught unaware. - AB