First sandboxes are set up. These are held together with metal
stakes and cotter pins for fast set-up and take down.
For the most part, the tubes are made of the PVC-type material
used to make drains for your home plumbing, though a few were
made of iron and were quite heavy. They had diameters of 3",
4", 5", and 6".
These are set up in a specific order in each box, well away
from the sides and each other. They are inspected for any debris
left from a previous display.
The finale fireworks are in their own green containers in
the background of this photo.