STS073-351-024 (20 October - 5 November 1995) --- Astronaut Kenneth D. Bowersox, STS-73 mission commander, retrieves a crow bar from a tool set onboard the science module in the cargo bay of the Earth-orbiting Space Shuttle Columbia. Various tools were available for a variety of in-flight maintenance tasks for the crew to carry out during the 16-day United States Microgravity Laboratory (USML-2) mission.