With the electricians getting started on lighting at the loft project, Bob takes a look at how track lighting gets put together. Lighting designer Markus Earley gives Bob a tour of Lightolier's Tech Center in Fall River, MA, a working model that demonstrates the power of light to change the mood of a space. Back at the loft, an extra large mirror, a backlit shelf, and glass partitions for the shower stall are all installed.