Army Astronauts
HOUSTON - Army Astronaut Col. Mark Vande Hei attired in a training version of the Extravehicular Mobility Unit, or EMU, enters the water of the Neutral Buoyancy Laboratory near NASA's Johnson Space Center in Houston, Texas, Feb. 8 for training which is intended to help prepare him for work on the exterior of the International Space Station. Vande Hei is scheduled to depart for an ISS mission in March 2017. The Army astronaut detachment is part of the U.S. Army Space and Missile Defense Command/Army Forces Strategic Command. (photo by Dottie K. White)