2008 4thFest Prep 006

2008 4thFest Prep 006

Volunteers handling shells must be over the age of 18, and while on site are visible by their bright red shirts. The shells visible here already have been prepared, and are considered "live" -- that is, able to fire when connected to the system on Friday -- although some planned testing takes place during the days preceding the Fourth of July.

Image: Penn State