The Saturn V paper is here (pdf):
http://www.collectspace.com/review/SaturnVFireball.pdf
Just shows that man was put on the moon in part by photocopiers and staplers...
At least one Apollo astronaut (?Collins) noticed and commented on how few technicians there were around the pad area when they arrived on launch day vs. the other days they went there pre-launch.
Of course on launch day the vehicle was fully fuelled..........