STS113-340-015 (28 November 2002) --- Astronaut Michael E. Lopez-Alegria, STS-113 mission specialist, is photographed in the midst of a pre-breathe exercise in preparation for the mission�s second session of extravehicular activity (EVA) in the Quest Airlock on the International Space Station (ISS). Astronaut Donald R. Pettit, Expedition Six NASA ISS science officer, assisted Lopez-Alegria.