STS104-315-005 (12-24 July 2001) --- With Earth's horizon in the background, astronaut Michael L. Gernhardt, STS-104 mission specialist, participates in one of three space walks aimed toward wrapping up the completion of work on the second phase of the International Space Station (ISS). Gernhardt was joined on the extravehicular activity (EVA) by astronaut James F. Reilly.