In this Jan. 5, 2011 file photo, Rep. Gabrielle Giffords, D-Ariz., takes part in a reenactment of her swearing-in, on Capitol Hill in Washington. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

In this Jan. 5, 2011 file photo, Rep. Gabrielle Giffords, D-Ariz., takes part in a reenactment of her swearing-in, on Capitol Hill in Washington. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

While Rep. Giffords recovers, her staff has continued to work. As this file photo of the office's in/out board shows, though, they do so knowing that one aide — Gabe Zimmerman — was killed in the Jan. 8 rampage. Allen Breed/AP hide caption

itoggle caption Allen Breed/AP