Caldwell Dyson on COLBERT in Node 2

S131-E-010088 (14 April 2010) --- NASA astronaut Tracy Caldwell Dyson, Expedition 23 flight engineer, equipped with a bungee harness, exercises on the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the Harmony node of the International Space Station while space shuttle Discovery (STS-131) remains docked with the station.