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Katherine Trinidad
Headquarters, Washington

James Hartsfield
Johnson Space Center, Houston

July 10, 2007
Canadian Astronaut to Discuss Role on Next Shuttle Flight
HOUSTON - Canadian Space Agency astronaut and physician Dave Williams, who is set to launch in August aboard NASA's space shuttle Endeavour, will be available for satellite interviews from 2 to 4 p.m. CDT on Friday, July 13.

Media interested in participating should contact NASA's Johnson Space Center newsroom at 281-483-5111 by 5 p.m., Thursday, July 12.

Williams, a former emergency room physician, will be making his second spaceflight. He first flew as a mission specialist aboard space shuttle Columbia on the STS-90 mission in April 1998. During the Endeavour mission, designated STS-118, he will conduct at least two spacewalks to continue assembly of the International Space Station.

The Canadian Space Agency selected Williams, a native of Saskatoon, Saskatchewan, Canada, as an astronaut in 1992. He began training with NASA three years later. His career includes participating in two missions as a crew member in the Aquarius Underwater Research Facility off the Florida coast.

For complete biographical information about Williams, visit:

For NASA Television downlink, schedule and steaming video information, visit:

For more information about the STS-118 mission and its crew, visit:

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