NASA won't speculate on flight by Giffords' hubby

CAPE CANAVERAL, Fla. (AP) - NASA officials say it's premature to speculate on whether Mark Kelly, the husband of Arizona Rep. Gabrielle Giffords, would step down as commander of the April flight of the shuttle Endeavour.

Kelly rushed to his wife's hospital bedside Saturday, after the Democrat was shot and injured in a mass shooting outside a Tucson grocery store.
Kelly's identical twin brother, Scott, is currently on the International Space Station. He tweeted from space that he wants to thank "everyone for their thoughts and prayers, words of condolences and encouragement for the victims and their families."

To take part in Endeavour's final flight, Mark Kelly would have to keep up with the grueling training in the next three months, primarily in Houston, and still spend time with his wife of 3 years, hospitalized in Arizona.
The flight is slated to be the last voyage of the 30-year shuttle program.
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