"Digger" and "dozer"

I know some of you will find this silly however, I was totally facinated this morning when I went to take progress pictures.  Tri-City Groundbreakers were there scraping top-soil and working on the site.  They use GPS to know exactly where to dig and how deep.  I could have stayed for hours to watch!  I took a short video because the photos were just not getting the point across (at least in my mind).  Enjoy the show!