Shane Kimbrough is a retired United States Army officer and NASA astronaut. He was part of the first group of candidates selected for NASA astronaut training following the Space Shuttle Columbia disaster. Kimbrough is a veteran of three spaceflights, the first being a Space Shuttle flight, and the second being a six-month mission to the ISS on board a Russian Soyuz craft. He was the commander of the International Space Station for Expedition 50, and returned to Earth in April 2017.