Mastracchio and Anderson in Node 3

ISS023-E-024146 (16 April 2010) --- NASA astronauts Rick Mastracchio (top) and Clayton Anderson, both STS-131 mission specialists, pose for a photo near the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the Harmony node of the International Space Station while space shuttle Discovery remains docked with the station.