Husband discusses Giffords' progress in interview

This photo provided by ABC television shows Rep. Gabrielle Giffords' husband and NASA astronaut Capt. Mark Kelly talks with host Diane Sawyer during a pretaped interview in Tucson, Saturday, Jan. 15, 2011, his first television interview since the tragic shooting of his wife in Tucson. The interview is scheduled to air Tuesday, Jan. 18. (AP Photo/ABC News, Ralph Freso)  NO ARCHIVES. NO SALES.

This photo provided by ABC television shows Rep. Gabrielle Giffords' husband and NASA astronaut Capt. Mark Kelly talks with host Diane Sawyer during a pretaped interview in Tucson, Saturday, Jan. 15, 2011, his first television interview since the tragic shooting of his wife in Tucson. The interview is scheduled to air Tuesday, Jan. 18. (AP Photo/ABC News, Ralph Freso) NO ARCHIVES. NO SALES.

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