You never know what you can find at a site visit... 

We were doing preliminary site investigations for an upcoming seismic project at The Margarita Ranch House on Camp Pendleton.  The house has a colorful history which dates back to 1827.  It was previously used as the home of the commanding general of the base and has served as a guest house for VIPs such as the Secretary of the Navy and multiple US Presidents.

And sometimes on a site visit you end up sitting where multiple presidents have sat before you.