Former Rep. Gabrielle "Gabby" Giffords and her husband Capt. Mark Kelly attend a town hall event with President Barack Obama

Former Rep. Gabrielle "Gabby" Giffords and her husband Capt. Mark Kelly listen to a question for President Barack Obama during a live CNN town hall event on reducing gun violence in America, at George Mason University in Fairfax, Va., Jan. 7, 2016. January 8th marks the anniversary of the 2011 shooting at a Tucson, Ariz., constituent event that left six dead and 13 injured, including Rep. Giffords, the target of the attack. (Official White House Photo by Pete Souza)

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