July 10, 2007

Katherine Trinidad Headquarters, Washington 202-358-3749

James Hartsfield Johnson Space Center, Houston 281-483-5111

MEDIA ADVISORY: M07-085

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:

http://www jsc nasa gov/Bios/htmlbios/williams html

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

http://www nasa gov/ntv

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

http://www nasa gov/shuttle

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