Astronauts Steve Swanson, Reid Wiseman and Alexander Gerst

JSC2012-E-239118 (30 Nov. 2012) --- NASA astronaut Steve Swanson (foreground), Expedition 39 flight engineer and Expedition 40 commander; along with NASA astronaut Reid Wiseman (center) and European Space Agency astronaut Alexander Gerst, both Expedition 40/41 flight engineers, participate in a Depress Crew Response training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Using a specific type of pressure sensor, this contingency training prepares the crew in the procedures to follow in the event of an emergency depressurization of the space station and evacuation in a Soyuz spacecraft. Photo credit: NASA