NASA astronaut Jeff Williams, center, presents montages from his missions onboard the International Space Station to acting NASA Deputy Administrator Lesa Roe, left, and acting NASA Administrator Robert Lightfoot, right, Tuesday, March 21, 2017 at NASA Headquarters in Washington, DC.
NASA astronaut Jeff Williams, center, presents montages from his missions onboard the International Space Station to acting NASA Deputy Administrator Lesa Roe, left, and acting NASA Administrator Robert Lightfoot, right, Tuesday, March 21, 2017 at NASA Headquarters in Washington, DC. Williams spent 172 days living and working onboard the International Space Station as part of Expedition 47 and commander of Expedition 48. Williams has spent 534 days off the planet during three long-duration space station missions and one flight onboard the space shuttle.
Photo Credit: (NASA/Joel Kowsky)