NASA astronauts Chris Ferguson (second right), STS-135 commander; Mike Fossum (right), Expedition 28 flight engineer and Expedition 29 commander; Ron Garan (left), Expedition 27/28 flight engineer; and Japan Aerospace Exploration Agency (JAXA) astronaut Satoshi Furukawa, Expedition 28/29 flight engineer, participate in a joint emergency scenarios training session in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. STS-135 is planned to be the final mission of the space shuttle program.