Sellers and Fossum in EMUs inside the A/L before their EVA1 during STS-121 / Exp. 13 joint OPS

S121-E-05942 (8 July 2006) --- Astronauts Piers J. Sellers (right) and Michael E. Fossum, STS-121 mission specialists, attired in their Extravehicular Mobility Unit (EMU) spacesuits, prepare for the start of the first scheduled session of extravehicular activity (EVA) in the Quest Airlock of the International Space Station.