On January 8, 2011, while Kelly was on the ISS, Kelly's sister-in-law Congresswoman Gabrielle Giffords was shot in Tucson. "Soyuz TMA-01M" landed in Kazakhstan on March 16, 2011, and Kelly travelled to TIRR Memorial Hermann in Houston to see Giffords and Mark. Mark was the commander of STS-134, the final flight of "Endeavour", and launched on May 16, 2011, with Giffords in attendance. STS-134 had originally been scheduled to launch in February 2011, which would have made the Kelly brothers the first twins to fly together in space.