US space shuttle Endeavor will launch for one last time on Friday as NASA space shuttle program's next-to-last mission. The launch nears the end to the program's 30-year run.
The presidential family is expected to attend, as well as the wife of the shuttle commander, Congresswoman Gabrielle Giffords, who is recovering from a gunshot wound sustained while meeting constituents in January.
Al Jazeera's Scott Heidler reports from the Kennedy Space Center.