ISS012-E-14518 (10 Jan. 2006) --- Astronaut William S. (Bill) McArthur, Expedition 12 commander and NASA space station science officer, talks to Mission Control Center while holding the Total Force Foot Ground Interface (TF-FGI) during Foot/Ground Reaction Forces During Spaceflight (FOOT) experiment set-up operations in the Destiny laboratory of the International Space Station. The Foot Ground Interface Flight Calibration Unit (FGI-GCU) is visible at right.